#include<iostream>
#include<fstream>
using namespace std;
ifstream fi("combinari.in");
ofstream fo("combinari.out");
int n, k;
int a[20];

void backtrack(int pos, int mx) {
	for (int i = mx; i <= n; i++) {
		a[pos] = i;
		if (pos == k) {
			fo << a[1];
			for (int j = 2; j <= k; j++)
				fo << ' ' << a[j];
			fo << "\n";
		} else {
			backtrack(pos + 1, i + 1);
		}
	}
}

int main() {
	fi >> n >> k;
	backtrack(1, 1);
	fi.close();
	fo.close();
	return 0;	
}