#include <stdio.h>
#include <vector>
using namespace std;
int n,k;
std::vector<int> st;
void bktr(int p)
{
    for(int i=st[p-1]+1;i<=n;++i)
    {
        st.push_back(i);
        if(p==k)
        {
            for(int i=1;i<=k;++i)printf("%d ",st[i]);
            printf("\n");
        }
        else bktr(p+1);
        st.pop_back();
    }
}

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d",&n,&k);
    st.push_back(0);
    bktr(1);
    return 0;
}