#include <stdio.h>

int main(void) {
  int grid[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};

  int i = 0;
  while (i < 3) {
    int j = 0;
    while (j < 3) {
      printf("%d", grid[i][j]);
      j++;
    }
    printf("\n");
    i++;
  }

  return 0;
}