#include<stdio.h>
#include<string.h>
void main(){
	int i=0,j=0;
	char s1[100],s2[100];
	printf("enter the first string");
	scanf("%s",s1);
	printf("enter the second string");
	scanf("%s",s2);
	while(s1[i]!='\0'){
		while(s2[j]!='\0'){
			if(s1[i]==s2[j]){
				printf("%c",s2[j]);
			}
			j++;
		}
		j=0;
		i++;
	}
}