#include <cstdio>

int n, k, sol[20], viz[20];
void back(int l)
{
    if(l == k)
    {
        for(int i=1; i <= k; i++)
            printf("%d ", sol[i]);
        printf("\n");
        return;
    }
    for(int i=sol[l]+1;i<=n;i++)
    {
        sol[l+1] = i;
        back(l+1);
    }
}
int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d", &n, &k);
    back(0);
    return 0;
}