#include <bits/stdc++.h>
using namespace std;
int n,k,st[20];
void Back(int q){
    if(q==k+1){
        for(int i=1;i<=k;++i)
            printf("%d ",st[i]);
        printf("\n");
    }
    for(int i=st[q-1]+1;i<=n;++i){
        st[q]=i;
        Back(q+1);
    }
}
int main(){
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d",&n,&k);
    Back(1);
    return 0;
}