#include <cstdio>
using namespace std;
int n,k,st[20],viz;
void Afisare()
    {int i;
     for(i=1;i<=k;i++)
        printf("%d ",st[i]);
        printf("\n");
    }
void Back(int top)
    {int i;
     if(top==k+1)Afisare();
     else {for(i=st[top-1]+1;i<=n;i++)
              {st[top]=i;
               Back(top+1);
              }
          }
    }
int main()
{freopen("combinari.in","r",stdin);
 freopen("combinari.out","w",stdout);
 scanf("%d%d",&n,&k);
 Back(1);
}