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import java.util.*;
import java.io.*;
public class Main {
	public static long mod= (long) (1e9 +7);
	public static void main(String args[]){
		InputReader s= new InputReader(System.in);
		OutputStream outputStream= System.out;
		PrintWriter out= new PrintWriter(outputStream);
		String a= s.next();
		String b= s.next();
		String c= s.next();
		for(int j=0;;j++){
		int arr1[]= new int[200];
		int arr2[]= new int[200];
		for(int i=0;i<b.length();i++){
			arr1[b.charAt(i)]++;
			arr2[b.charAt(i)]++;
		}
		int count=0;
		for(int i=0;i<a.length();i++){
			if(arr1[a.charAt(i)]!=0){
				count++;
				arr1[a.charAt(i)]--;
			}
		}
		/*for(int i=97;i<=122;i++){
			System.out.print(arr2[i]);
		}*/
		String d = a;
		if(count==b.length()){
			System.out.print(b);
			for(int i=0;i<d.length();i++){
				if(arr2[d.charAt(i)]!=0){
					arr2[d.charAt(i)]--;
					a = removeCharAt(a,i);
				}
			}
			//System.out.println(a);
		}
		else break;
	}
		for(int j=0;;j++){
			int arr1[]= new int[200];
			int arr2[]= new int[200];
			for(int i=0;i<c.length();i++){
				arr1[c.charAt(i)]++;
				arr2[c.charAt(i)]++;
			}
			int count=0;
			for(int i=0;i<a.length();i++){
				if(arr1[a.charAt(i)]!=0){
					count++;
					arr1[a.charAt(i)]--;
				}
			}
			String d= a;
			if(count==c.length()){
				System.out.print(c);
				for(int i=0;i<d.length();i++){
					if(arr2[d.charAt(i)]!=0){
						arr2[d.charAt(i)]--;
						a= removeCharAt(a,i);
					}
				}
			}
			else break;
		}
		System.out.println(a);
		out.close();
	}
	 public static String removeCharAt(String s, int pos) {
	      return s.substring(0, pos) + s.substring(pos + 1);
	   }
	static class InputReader {

	    public BufferedReader reader;
	    public StringTokenizer tokenizer;
 
	    public InputReader(InputStream inputstream) {
	      reader = new BufferedReader(new InputStreamReader(inputstream));
	      tokenizer = null;
	    }
	    
	    public String nextLine(){
	    	String fullLine=null;
	    	while (tokenizer == null || !tokenizer.hasMoreTokens()) {
	            try {
	              fullLine=reader.readLine();
	            } catch (IOException e) {
	              throw new RuntimeException(e);
	            }
	            return fullLine;
	          }
	          return fullLine;
	    }
		public String next() {
	      while (tokenizer == null || !tokenizer.hasMoreTokens()) {
	        try {
	          tokenizer = new StringTokenizer(reader.readLine());
	        } catch (IOException e) {
	          throw new RuntimeException(e);
	        }
	      }
	      return tokenizer.nextToken();
	    }
		public long nextLong() {
		      return Long.parseLong(next());
		    }
	    public int nextInt() {
	      return Integer.parseInt(next());
	    }
	  }
	public static int gcd(int number1, int number2) {  
		if(number2 == 0){
			return number1;
		} 
		return gcd(number2, number1%number2); 
	}
	public static int combinations(int n,int r){
		if(n==r) return 1;
		if(r==1) return n;
		if(r==0) return 1;
		return combinations(n-1,r)+ combinations(n-1,r-1);
	}

	public static int expo(int a, int b){
	    if (b==1)
	        return a;
	    if (b==2)
	        return a*a;

	    if (b%2==0){
	            return expo(expo(a,b/2),2);
	    }
	    else{
	        return a*expo(expo(a,(b-1)/2),2);
	    }
	}
	
	public static void sieve(int N){
		int arr[]= new int[N+1];
		for(int i=2;i<Math.sqrt(N);i++){
			if(arr[i]==0){
				for(int j= i*i;j<= N;j= j+i){
					arr[j]=1;
				}
			}
		}
		// All the i for which arr[i]==0 are prime numbers.
	}
}
