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

int R, S, C;

struct cerv {
  char jmeno[64];
  int pocet;
};

struct cerv cervi[26];


int cmp(const void *a, const void *b)
{
  return ((struct cerv *) b)->pocet - ((struct cerv *) a)->pocet;
}

void solve()
{
  qsort(cervi, 26, sizeof(cervi[0]), cmp);

  printf("Nejzravejsi cervotoc je %s.\n", cervi[0].jmeno);
}

int main(void)
{
  int i, j;
  char buf[1000];
  
  for (;;) {
    scanf("%d %d %d\n", &R, &S, &C);

    if (!R && !S && !C)
      break;

    memset(cervi, 0, sizeof(cervi));

    for (i=0; i<C; i++) {
      scanf("%s\n", buf);
      strcpy(cervi[*buf - 'A'].jmeno, buf);
    }

    for (i=0; i<R; i++) {
      scanf("%s\n", buf);
      for (j=0; j<S; j++) {
	int x = buf[j] - 'A';

	cervi[x].pocet++;
      }
    }

    solve();
  }
  return 0;
}