#include <cstdio>
using namespace std;

int n,k1,a[18];

void back(int k,int t)
{
    if(k==k1)
    {
        for(int j=0;j<k1;++j) printf("%d ",a[j]);
        printf("\n");
    }
    else
    {
        for(int i=t;i<n;++i)
        {
            a[k]=i+1;
            back(k+1,i+1);
        }
    }
}


int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d%d",&n,&k1);
    back(0,0);
    return 0;
}