#include <cstdio>

using namespace std;

int n,k;
int v[20];

void back(int sti,int step)
{
    int i;
    if(step==k+1)
    {
        for(i=1;i<=k;++i)
            printf("%d ",v[i]);
        printf("\n");
    }
    else
    {
        for(int i=sti;i<=n;++i)
        {
            v[step]=i;
            back(i+1,step+1);
        }
    }
}

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);

    scanf("%d%d",&n,&k);

    back(1,1);

    return 0;
}