/* Generare combinari Backtrack */
#include <cstdio>

int N, K, X[20];

void BackTrack(int P)
{
    if (P == K + 1)
    {
        for (int i = 1; i <= K; i++) printf("%d ", X[i]);
        printf("\n");
    }
    else
    {
        for (int i = X[P - 1] + 1; i <= N; i++)
        {
            X[P] = i;
            BackTrack(P + 1);
        }
    }
}

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d", &N, &K);
    BackTrack(1);
}