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

char *marks = "DCHS";
char *numbers = "A23456789TJQK";
int numof(char c, char *str) {
  int i;
  for (i = 0; *str; str++, i++) if (*str == c) break;
  return i;
}

int cardcmp(const void *a, const void *b) {
  char *p = (char *)a, *q = (char *)b;
  int ret;
  ret = numof(p[0], marks) - numof(q[0], marks);
  if (ret) return ret;
  ret = numof(p[1], numbers) - numof(q[1], numbers);
  return ret;
}

int main(void) {
  int N;
  char cards[52 * 3 + 1];

  scanf("%d\n", &N);
  fgets(cards, N * 3 + 1,stdin);
  cards[N * 3 - 1] = ' ';
  qsort(cards, N, 3, cardcmp);
  cards[N * 3 - 1] = '\n';
  printf("%s", cards);
  return 0;
}