#include<fstream>
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");
int  n,k,v[20];
void backtracking( int p, int k, int n ){
    int i;
    if( p == k + 1 ){
        for( i = 1; i <= k; i ++ ){
            out << v[i]<<" ";
        }
        out <<"\n";
    }
    else{
        for( i = v[p-1] + 1; i <= n; i ++ ){
            v[p] = i;
            backtracking( p + 1 , k, n);
        }
    }

}
int main(){
    in >> n >> k;
    backtracking( 1, k ,n);


    return 0;
}