You are given strings S and T, consisting of lowercase English letters. It is guaranteed that T is a permutation of the string abc. 

Find string S', the lexicographically smallest permutation of S such that T is not a subsequence of S'.

String a is a permutation of string b if the number of occurrences of each distinct character is the same in both strings.

A string a is a subsequence of a string b if a can be obtained from b by deletion of several (possibly, zero or all) elements.

A string a is lexicographically smaller than a string b if and only if one of the following holds:

  * a is a prefix of b, but a ≠ b;
  * in the first position where a and b differ, the string a has a letter that appears earlier in the alphabet than the corresponding letter in b.

Input

Each test contains multiple test cases. The first line contains a single integer t (1 ≤ t ≤ 1000) — the number of test cases. Description of the test cases follows.

The first line of each test case contains a string S (1 ≤ |S| ≤ 100), consisting of lowercase English letters.

The second line of each test case contains a string T that is a permutation of the string abc. (Hence, |T| = 3).

Note that there is no limit on the sum of |S| across all test cases.

Output

For each test case, output a single string S', the lexicographically smallest permutation of S such that T is not a subsequence of S'.

Example

Input


7
abacaba
abc
cccba
acb
dbsic
bac
abracadabra
abc
dddddddddddd
cba
bbc
abc
ac
abc


Output


aaaacbb
abccc
bcdis
aaaaacbbdrr
dddddddddddd
bbc
ac

Note

In the first test case, both aaaabbc and aaaabcb are lexicographically smaller than aaaacbb, but they contain abc as a subsequence.

In the second test case, abccc is the smallest permutation of cccba and does not contain acb as a subsequence.

In the third test case, bcdis is the smallest permutation of dbsic and does not contain bac as a subsequence.

import java.io.IOException;
import java.io.InputStream; 
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Set;

public class A {

  /**
   * Template @author William Fiset, william.alexandre.fiset@gmail.com
   *
   */
  static InputReader in;
  static StringBuilder sb;

  static class InputReader {

    private static final int DEFAULT_BUFFER_SIZE = 1 << 16;
    private static final InputStream DEFAULT_STREAM = System.in;
    private static final int MAX_DECIMAL_PRECISION = 21;
    private int c;
    private byte[] buf;
    private int bufferSize, bufIndex, numBytesRead;

    private InputStream stream;

    private static final byte EOF = -1;
    private static final byte NEW_LINE = 10;
    private static final byte SPACE = 32;
    private static final byte DASH = 45;
    private static final byte DOT = 46;

    private char[] charBuffer;

    private static byte[] bytes = new byte[58];
    private static int[] ints = new int[58];
    private static char[] chars = new char[128];

    static {
      char ch = ' ';
      int value = 0;
      byte _byte = 0;
      for (int i = 48; i < 58; i++) {
        bytes[i] = _byte++;
      }
      for (int i = 48; i < 58; i++) {
        ints[i] = value++;
      }
      for (int i = 32; i < 128; i++) {
        chars[i] = ch++;
      }
    }

    private static final double[][] doubles = {
      {0.0d, 0.00d, 0.000d, 0.0000d, 0.00000d, 0.000000d, 0.0000000d, 0.00000000d, 0.000000000d, 0.0000000000d, 0.00000000000d, 0.000000000000d,
        0.0000000000000d, 0.00000000000000d, 0.000000000000000d, 0.0000000000000000d, 0.00000000000000000d, 0.000000000000000000d,
        0.0000000000000000000d, 0.00000000000000000000d, 0.000000000000000000000d},
      {0.1d, 0.01d, 0.001d, 0.0001d, 0.00001d, 0.000001d, 0.0000001d, 0.00000001d, 0.000000001d, 0.0000000001d, 0.00000000001d, 0.000000000001d,
        0.0000000000001d, 0.00000000000001d, 0.000000000000001d, 0.0000000000000001d, 0.00000000000000001d, 0.000000000000000001d,
        0.0000000000000000001d, 0.00000000000000000001d, 0.000000000000000000001d},
      {0.2d, 0.02d, 0.002d, 0.0002d, 0.00002d, 0.000002d, 0.0000002d, 0.00000002d, 0.000000002d, 0.0000000002d, 0.00000000002d, 0.000000000002d,
        0.0000000000002d, 0.00000000000002d, 0.000000000000002d, 0.0000000000000002d, 0.00000000000000002d, 0.000000000000000002d,
        0.0000000000000000002d, 0.00000000000000000002d, 0.000000000000000000002d},
      {0.3d, 0.03d, 0.003d, 0.0003d, 0.00003d, 0.000003d, 0.0000003d, 0.00000003d, 0.000000003d, 0.0000000003d, 0.00000000003d, 0.000000000003d,
        0.0000000000003d, 0.00000000000003d, 0.000000000000003d, 0.0000000000000003d, 0.00000000000000003d, 0.000000000000000003d,
        0.0000000000000000003d, 0.00000000000000000003d, 0.000000000000000000003d},
      {0.4d, 0.04d, 0.004d, 0.0004d, 0.00004d, 0.000004d, 0.0000004d, 0.00000004d, 0.000000004d, 0.0000000004d, 0.00000000004d, 0.000000000004d,
        0.0000000000004d, 0.00000000000004d, 0.000000000000004d, 0.0000000000000004d, 0.00000000000000004d, 0.000000000000000004d,
        0.0000000000000000004d, 0.00000000000000000004d, 0.000000000000000000004d},
      {0.5d, 0.05d, 0.005d, 0.0005d, 0.00005d, 0.000005d, 0.0000005d, 0.00000005d, 0.000000005d, 0.0000000005d, 0.00000000005d, 0.000000000005d,
        0.0000000000005d, 0.00000000000005d, 0.000000000000005d, 0.0000000000000005d, 0.00000000000000005d, 0.000000000000000005d,
        0.0000000000000000005d, 0.00000000000000000005d, 0.000000000000000000005d},
      {0.6d, 0.06d, 0.006d, 0.0006d, 0.00006d, 0.000006d, 0.0000006d, 0.00000006d, 0.000000006d, 0.0000000006d, 0.00000000006d, 0.000000000006d,
        0.0000000000006d, 0.00000000000006d, 0.000000000000006d, 0.0000000000000006d, 0.00000000000000006d, 0.000000000000000006d,
        0.0000000000000000006d, 0.00000000000000000006d, 0.000000000000000000006d},
      {0.7d, 0.07d, 0.007d, 0.0007d, 0.00007d, 0.000007d, 0.0000007d, 0.00000007d, 0.000000007d, 0.0000000007d, 0.00000000007d, 0.000000000007d,
        0.0000000000007d, 0.00000000000007d, 0.000000000000007d, 0.0000000000000007d, 0.00000000000000007d, 0.000000000000000007d,
        0.0000000000000000007d, 0.00000000000000000007d, 0.000000000000000000007d},
      {0.8d, 0.08d, 0.008d, 0.0008d, 0.00008d, 0.000008d, 0.0000008d, 0.00000008d, 0.000000008d, 0.0000000008d, 0.00000000008d, 0.000000000008d,
        0.0000000000008d, 0.00000000000008d, 0.000000000000008d, 0.0000000000000008d, 0.00000000000000008d, 0.000000000000000008d,
        0.0000000000000000008d, 0.00000000000000000008d, 0.000000000000000000008d},
      {0.9d, 0.09d, 0.009d, 0.0009d, 0.00009d, 0.000009d, 0.0000009d, 0.00000009d, 0.000000009d, 0.0000000009d, 0.00000000009d, 0.000000000009d,
        0.0000000000009d, 0.00000000000009d, 0.000000000000009d, 0.0000000000000009d, 0.00000000000000009d, 0.000000000000000009d,
        0.0000000000000000009d, 0.00000000000000000009d, 0.000000000000000000009d}
    };

    public InputReader() {
      this(DEFAULT_STREAM, DEFAULT_BUFFER_SIZE);
    }

    public InputReader(int bufferSize) {
      this(DEFAULT_STREAM, bufferSize);
    }

    public InputReader(InputStream stream) {
      this(stream, DEFAULT_BUFFER_SIZE);
    }

    public InputReader(InputStream stream, int bufferSize) {
      if (stream == null || bufferSize <= 0) {
        throw new IllegalArgumentException();
      }
      buf = new byte[bufferSize];
      charBuffer = new char[128];
      this.bufferSize = bufferSize;
      this.stream = stream;
    }

    private byte read() throws IOException {

      if (numBytesRead == EOF) {
        throw new IOException();
      }

      if (bufIndex >= numBytesRead) {
        bufIndex = 0;
        numBytesRead = stream.read(buf);
        if (numBytesRead == EOF) {
          return EOF;
        }
      }

      return buf[bufIndex++];
    }

    private void doubleCharBufferSize() {
      char[] newBuffer = new char[charBuffer.length << 1];
      for (int i = 0; i < charBuffer.length; i++) {
        newBuffer[i] = charBuffer[i];
      }
      charBuffer = newBuffer;
    }

    private int readJunk(int token) throws IOException {

      if (numBytesRead == EOF) {
        return EOF;
      }

      do {

        while (bufIndex < numBytesRead) {
          if (buf[bufIndex] > token) {
            return 0;
          }
          bufIndex++;
        }

        numBytesRead = stream.read(buf);
        if (numBytesRead == EOF) {
          return EOF;
        }
        bufIndex = 0;

      } while (true);

    }

    public byte nextByte() throws IOException {
      return (byte) nextInt();
    }

    public int nextInt() throws IOException {

      if (readJunk(DASH - 1) == EOF) {
        throw new IOException();
      }
      int sgn = 1, res = 0;

      c = buf[bufIndex];
      if (c == DASH) {
        sgn = -1;
        bufIndex++;
      }

      do {

        while (bufIndex < numBytesRead) {
          if (buf[bufIndex] > SPACE) {
            res = (res << 3) + (res << 1);
            res += ints[buf[bufIndex++]];
          } else {
            bufIndex++;
            return res * sgn;
          }
        }

        numBytesRead = stream.read(buf);
        if (numBytesRead == EOF) {
          return res * sgn;
        }
        bufIndex = 0;

      } while (true);

    }

    public int[] nextIntArray(int n) throws IOException {
      int[] ar = new int[n];
      for (int i = 0; i < n; i++) {
        ar[i] = nextInt();
      }
      return ar;
    }

    public void close() throws IOException {
      stream.close();
    }

    public long nextLong() throws IOException {
      if (readJunk(DASH - 1) == EOF) {
        throw new IOException();
      }
      int sgn = 1;
      long res = 0L;
      c = buf[bufIndex];
      if (c == DASH) {
        sgn = -1;
        bufIndex++;
      }
      do {
        while (bufIndex < numBytesRead) {
          if (buf[bufIndex] > SPACE) {
            res = (res << 3) + (res << 1);
            res += ints[buf[bufIndex++]];
          } else {
            bufIndex++;
            return res * sgn;
          }
        }
        numBytesRead = stream.read(buf);
        if (numBytesRead == EOF) {
          return res * sgn;
        }
        bufIndex = 0;
      } while (true);
    }

    public String nextString() throws IOException {
      if (numBytesRead == EOF) {
        return null;
      }
      if (readJunk(SPACE) == EOF) {
        return null;
      }

      for (int i = 0;;) {
        while (bufIndex < numBytesRead) {
          if (buf[bufIndex] > SPACE) {
            if (i == charBuffer.length) {
              doubleCharBufferSize();
            }
            charBuffer[i++] = (char) buf[bufIndex++];
          } else {
            bufIndex++;
            return new String(charBuffer, 0, i);
          }
        }

        // Reload buffer
        numBytesRead = stream.read(buf);
        if (numBytesRead == EOF) {
          return new String(charBuffer, 0, i);
        }
        bufIndex = 0;
      }
    }
  }

  public static void main(String args[]) throws Exception {
    in = new InputReader(System.in);
    sb = new StringBuilder();
    int t = in.nextInt();
    while (t-- != 0) {
      solve();
    }
  }

  static void solve() throws IOException {
    String s, t;
    s = in.nextString();
    t = in.nextString();
    HashMap<Character, Integer> hm  = new HashMap();
    char[] carr = s.toCharArray();
    for (int i = 0;i<s.length();i++) {
      hm.put(carr[i], hm.getOrDefault(carr[i], 0)+1);
    }
    StringBuilder str = new StringBuilder();
    Set<Character> keySet = hm.keySet();
    Character[] kuchbhi = new Character[keySet.size()];
    int count = 0;
    for (Character i : keySet) {
      kuchbhi[count++] = i;
    }
    Arrays.sort(kuchbhi);
    for (Character kuchbhi1 : kuchbhi) {
      str.append(kuchbhi1);
    }
    char[] res = str.toString().toCharArray();
    for (int i = 1;i<res.length-1;i++) {
      if (res[i-1] == t.charAt(0) && res[i] == t.charAt(1) && res[i+1] == t.charAt(2)) {
        char temp = res[i];
        res[i] = res[i+1];
        res[i+1] = temp;
        break;
      }
    }
    StringBuilder hehe = new StringBuilder();
    for (int i = 0;i<res.length;i++) {
      for (int j = 0;j<hm.get(res[i]);j++) {
        hehe.append(res[i]);
      }
    }
    System.out.println(hehe.toString());
  }

}
