#include <cstdio>

#define NMAX 18

int sol[NMAX];
int n, k;

void back(int pas)
{
    if(pas == k)
    {
        for(int i=0;i<k;++i)
        {
            printf("%d ", sol[i]);
        }
        printf("\n");
    }
    else
    {
        for(int j=sol[pas-1]+1;j<=n;++j)
        {
            sol[pas] = j;
            back(pas+1);
        }
    }
}

int main()
{
    freopen("combinari.in", "r", stdin);
    freopen("combinari.out", "w", stdout);

    scanf("%d %d", &n, &k);

    back(0);

    return 0;
}