#!/usr/bin/env python3

import itertools
import sys

sys.stdout = open('combinari.out', 'w')

with open('combinari.in', 'r') as fin:
    n, k = tuple(map(int, fin.readline().split()))
    for c in itertools.combinations(map(str, range(1, n + 1)), k):
        print(' '.join(c))