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

int R, S, C;
int hash[256];
char buf[256];

int main()
{
  int i,j, max, max_jmeno,c;
  char jmena[256][80];
  char j_hash[256];

  while ((scanf("%d %d %d", &R, &S, &C))&&(R!=0)) {
/*    printf("%d %d %d\n",R,S,C);*/
    max = 0;
    memset(hash, 0, 256*4);
    for (i = 0; i < C; i++) {
      scanf("%s", jmena[i]);
/*      printf("%s",jmena[i]);*/
      j_hash[jmena[i][0]] = i;
    }
/*    max_jmeno = jmena[0][0];*/
    if ((C==1)||(S<=0)) {
      printf("Nejzravejsi cervotoc je %s.\n", jmena[0]);
      continue;
    }
    for(i = 0; i < R; i++) {
	scanf("%s",buf);
	for(j = 0; j < S; j++) {
        	if (buf[j] == '*') continue;
                if (++hash[buf[j]] >= max){
			max = hash[buf[j]];
	  		max_jmeno = buf[j];
		}
      	}
    }  
    printf ("Nejzravejsi cervotoc je %s.\n", jmena[j_hash[max_jmeno]]);
  }
  return 0;
}