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import java.awt.*;
import java.io.*;
import java.util.*;

public class Abc {
    public static void main(String[] args) throws Exception {
        FastReader sc = new FastReader();
        String a = sc.next(), b = sc.next(), c = sc.next();
        if (b.length() > c.length()) {
            String tmp = b;
            b = c;
            c = tmp;
        }
        int cnta[] = new int[26], cntb[] = new int[26], cntc[] = new int[26];
        for (int i = 0; i < a.length(); i++) {
            cnta[a.charAt(i) - 'a']++;
        }
        for (int i = 0; i < b.length(); i++) {
            cntb[b.charAt(i) - 'a']++;
        }
        for (int i = 0; i < c.length(); i++) {
            cntc[c.charAt(i) - 'a']++;
        }
        StringBuilder sb = new StringBuilder();

        while (isValid(cnta, cntb)) {
            for (int i = 0; i < 26; i++) {
                for (int j = 0; j < cntb[i]; j++) {
                    sb.append((char) (i + 'a'));
                    cnta[i]--;
                }
            }
        }
        while (isValid(cnta, cntc)) {
            for (int i = 0; i < 26; i++) {
                for (int j = 0; j < cntc[i]; j++) {
                    sb.append((char) (i + 'a'));
                    cnta[i]--;
                }
            }
        }
        for (int i = 0; i < 26; i++) {
            for (int j = 0; j < cnta[i]; j++) {
                sb.append((char) (i + 'a'));
            }
        }
        System.out.println(sb);
    }

    static boolean isValid(int a[], int b[]) {
        for (int i = 0; i < 26; i++) {
            if (a[i] < b[i]) return false;
        }
        return true;
    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
}