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#include<stdio.h>
void main()
{
	char a[100],b[100];
	char *s1,*s2;
	int i,j,k;
	scanf("%s",a);
	scanf("%s",b);
	s1=a;
	s2=b;
	for(i=0;*(s1+i)!='\0';i++)
	{
		for(j=0;*(s2+j)!='\0';j++)
		{
			if(*(s1+i)==*(s2+j))
			{
				printf("%c",*(s2+j));
				k=j;
				while(*(s2+k)!='\0')
				{
					*(s2+k)=*(s2+k+1);
					k++;
				}
				*(s2+k)='\0';
			}
		}
	}
}