#include <cstdio>
using namespace std;
int n,k,c[20];

void back(int);

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d%d",&n,&k);
    back(1);
    return 0;
}
void back(int p)
{
    if(p==k+1)
    {
        for(register int i=1; i<=k; ++i)
            printf("%d ",c[i]);
        printf("\n");
        return;
    }
    for(register int i=c[p-1]+1;i<=n-k+p;++i)
    {
        c[p]=i;
        back(p+1);
    }
}