#include<bits/stdc++.h> using namespace std; int a[30]; int main() { int n, r; cin >> n >> r; for (int s = (1 << n) - 1; s >= 0; s--) { int cnt = 0; for (int i = 0; i < n; i++) { if(s & (1 << i)) { a[cnt++] = i; } } if(cnt == r) { for (int i = r - 1; i >= 0; i--) { printf("%3d", n - a[i]); } printf("\n"); } } return 0; }