#include <stdio.h>

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

int main()
{
  int i,j, max, max_jmeno,c;
  char jmena[256][70];
  char j_hash[256];

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