#include <stdio.h>
#include <vector>

using namespace std;

void bkt( int N, int K, vector< int > V, int Max, FILE * fout ) {
    if( V.size( ) == K ) {
        for( int i = 0; i < K; i ++ ) {
            fprintf( fout, "%d ", V[ i ] );
        }
        fprintf( fout, "\n" );
    } else {
        for( int i = Max + 1; i <= N; i ++ ) {
            vector< int > nV = V;
            nV.push_back( i );
            int nMax = i;
            bkt( N, K, nV, nMax, fout );
        }
    }
}

int main()
{
    FILE * fin, * fout;
    fin = fopen( "combinari.in", "r" );
    fout = fopen( "combinari.out", "w" );

    int N, K;
    fscanf( fin, "%d%d", &N, &K );
    vector< int > vNULL;
    bkt( N, K, vNULL, 0, fout );

    fclose( fin );
    fclose( fout );
    return 0;
}