#include <stdio.h>

int main()
{
    puts ("0\n" \
    "1 2\n"
    "3 4 5 and\n" \
    "6 7 8 9\n" \
    "\n" \
    "0\n" \
    "2 1\n" \
    "5 4 3\n" \
    "9 8 7 6"
    );

    return 0;
}

#include <stdio.h>

int main()
{
    int n=0, i,j;

    for (i=1; i<5; i++)
    {
        for (j=i; j>0; j--)
        {
            printf("%u ", n);
            n++;
        }
        if (n == 6)
            puts("and");
        else
            putchar('\n');
    }

    n=0;
    for (i=0; i<5; i++)
    {
        n += i;
        for (j=1; j<=i; j++)
        {
            printf("%u ", n-j);
        }
        putchar('\n');
    }

    return 0;
}