#include <stdio.h>

int p[101][21], rp[101][21];
int s, m, n;
int sm[21];

int preferred_music (int i)
{
  int j;
  int pm = m+1;

  for (j = 1; j <= s; j ++)
    if (rp[i][sm[j]] < pm) pm = rp[i][sm[j]];
  return p[i][pm];
}

int friends (int cs, int cm)
{
  int f = 0, i;
  if (cs > s)
    {
      int pm = preferred_music (0);
      for (i = 0; i < n; i ++)
	if (preferred_music (i) == pm)
	  f ++;
    }
  else if (s-cs <= m-cm)
    for (i = cm; i <= m-(s-cs); i ++)
      {
	int ff;
	sm[cs] = i;
	ff = friends (cs+1, i+1);
	if (ff > f) f = ff;
      }
  return f;
}

int main (void)
{
  int k, K;
  int i, j;

  FILE *in = fopen ("party.in", "r");
  fscanf (in, "%d\n", &K);
  for (k = 1; k <= K; k ++)
    {
      fscanf (in, "%d %d %d\n", &s, &m, &n);
      for (i = 0; i < n; i ++, fscanf (in, "\n"))
	for (j = 0; j < m; j ++)
	  {
	    fscanf (in, "%d ", &p[i][j]);
	    rp[i][p[i][j]] = j;
	  }
      printf ("Data Set %d:\n", k);
      printf ("%d\n", friends (1,1));
    }
  fclose (in);
  return 0;
}