#include <stdio.h>
#include <inttypes.h>

int main()
{
    int32_t a, b, n;

    if(scanf("%d%d%d", &a, &b, &n) != 3)
    {
        fprintf(stderr, "Sorry, can't read");
        return 1;
    }

    for (int32_t i = a - 1; i < b; ++i)
    {
        if (i == a - 1)
        {
            for (int32_t j = 0; j < n; ++j)
            {
                printf("%c", ' ');
            }
        }
        else
        {
            printf(" %*d", n, i);
        }
    }
    printf("\n");

    for (int32_t i = a; i < b; ++i)
    {
        printf("%*d", n, i);
        for (int32_t j = a; j < b; ++j)
        {
            int64_t ans = i * j;
            printf(" %*ld", n, ans);
        }
        printf("\n");
    }

    return 0;
}