#include <stdio.h>
int main(void)
{
    const int MAX = 7;
    char ch = 'F';
    int x, y;
    for (x = 0; x < MAX; x++)
    {
        for (ch = 'F', y = 0; y < MAX -(MAX - x); ch--, y++)
        {
            printf("%c", ch);
        }
        printf("\n");
    }
    return 0;
}