#include <iostream>
#include <cstdio>

using namespace std;

long s[20],n,k;

void back(long l)
{
    long i;
    if (k==l) {for (i=1;i<=k;i++) printf("%ld ",s[i]); printf("\n");}
    else { for (i=s[l]+1;i<=n;i++)
    {s[l+1]=i; back(l+1);} }
}

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