#include <stdio.h>
#include <string.h>
int main()
{
	int n; 
    char c, str[100]; 
    fgets(str, 100, stdin);
    scanf("%d %c",&n, &c);
    char* token = strtok(str, " ");

    while (token != NULL) {
        if(token[n-1] == c) {
            printf("%s\n", token);
        }
        token = strtok(NULL, " ");
    }

    return 0;
}