#include <cstdio>

using namespace std;

const char InFile[]="combinari.in";
const char OutFile[]="combinari.out";

int n,k,combinare[20];

void backTrack(int t)
{
    if(t==k)
    {
        for(int i=1;i<=k;i++)
            printf("%d ",combinare[i]);
        printf("\n");
        return;
    }
    for(int i=combinare[t]+1;i<=n;++i)
    {
        combinare[t+1]=i;
        backTrack(t+1);
    }
}


int main()
{
    int combinare[20];
    freopen(InFile,"r",stdin);
    freopen(OutFile,"w",stdout);
    scanf("%d %d",&n,&k);
    backTrack(0);
    return 0;
}