#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

#define MAXS 61
char cerv[26][MAXS];
int cnt[26];

int main(){
int r,s,c;
char line[255];
int mo;
int i,j,x;
while(1) {
scanf("%d%d%d",&r,&s,&c);
if (r == 0) break;
while ((x = getchar()) == '\n') ;
ungetc(x,stdin);

for (i = 0; i < c; i++) {
    x = getchar() - 'A';
    cerv[x][0] = x+'A';
    gets(&cerv[x][1]);
    cnt[x] = 0;
    mo = x;
    /*printf("acteno jemno %s\n",cerv[x]);*/
}
for (i = 0; i < r; i++) {
    gets(line);
    for (j = 0; j < s; j++) {

        x = line[j];
	if (x != '*') {
           x -= 'A';
	   cnt[x]++;
	   if (cnt[x] > cnt[mo]) 
              mo = x;
	}
    }

}
printf("Nejzravejsi cervotoc je %s.\n",cerv[mo]);
}
	return 0;
}