#include <stdio.h>
#include <string.h>
#include <assert.h>

#define dprintf printf

typedef char tCERV[70];

int main()
{
	tCERV cervi[256];
	int sezrali[256];
	char fast[400];
	while (1) {
		int R, S, C;
		int i, y;
		int neco;	/* sezrali neco ? */

		/* Radky, Sloupcy, Cervi */
		assert (scanf ("%i%i%i", &R, &S, &C) == 3);
		assert(getchar() == '\n');
			
		if (!R && !S && !C) {
			return 0;
		}

		memset ((void *) sezrali, 0, sizeof(sezrali));
		memset ((void *) fast, 0, sizeof(fast));
		neco = 0;

		/* zaciname */
		for (i = 0; i < C; i++) {
			char buffer[100];
			gets(buffer); 
			strcpy(cervi[buffer[0]], buffer); 
			fast[i]=buffer[0];
		}

		/* cteme radky */
		for (i = 0; i < R; i++) {
			char buffer[300];
			char c;
			fgets(buffer, 260, stdin);
			for (y = 0; buffer[y] != 0; y++) {
				c = buffer[y];
				if (c != '*')
					sezrali[c]++;
			}
		}
	
		int maxi = 0, maxx=0;
		for (i = 0; fast[i]; i++) {
			int ind = fast[i];
			if (sezrali[ind] > maxx) {
				maxi = ind;
				maxx = sezrali[ind];
			}
		}
		printf("Nejzravejsi cervotoc je %s.\n", cervi[maxi]);
	}
}

/* vim: cindent
 */