#include <stdio.h>
#define MAX_K 18
FILE *fout;
int v[MAX_K + 1];
int n, k;
void comb( int pos ) {
    int i;
    if ( pos == k + 1 ) {
        for ( i = 1; i <= k; i++ )
            fprintf( fout, "%d ", v[i] );
        fprintf( fout, "\n" );
    } else {
        for ( i = v[pos - 1] + 1; i <= n; i++ ) {
            v[pos] = i;
            comb( pos + 1 );
        }
    }
}
int main() {
    FILE *fin;
    fin = fopen( "combinari.in", "r" );
    fscanf( fin, "%d%d", &n, &k );
    fclose( fin );
    fout = fopen( "combinari.out", "w" );
    comb( 1 );
    fclose( fout );
    return 0;
}