#include <stdio.h>

int main(void)
{
    int low = 4;
    int high = low;
    int p = 1;
    for (int i = 1; i <= 4; i++)
    {
        for (int j = 1; j <= 7; j++)
        {
            if (j >= low && j <= high)
            {
                if (i % 2 == 0 && j % 2 == 0)
                {
                    printf(" ");
                }
                else if (i % 2 == 1 && j % 2 == 1)
                {
                    printf(" ");
                }
                else
                {
                    printf("%d", p);
                    p++;
                }
            }
            else
            {
                printf(" ");
            }
        }
        printf("\n");
        low -= 2;
        high += 2;
    }
    return 0;
}