#include <stdio.h>
int main() {
  const char *a[] = {"abc", "def", "efg" };
  char const *b[] = {"ABC", "DEF", "EFG" };
  const char **h = &a[0];
  h = &b[0];
  *(h + 1) = "XYZ";
  printf("%c\n", *(*(h + 2) + 1));
  /* *(*(h + 2) + 1) = 'Z'; */ /* NG */
  return 0;
}

F