#include<stdio.h>
#define Nm 18
int C[Nm],n,k;

void back(int p)
{
    int i;

    if(p==k)
    {
        for(i=0;i<k-1;++i)
            printf("%d ",C[i]);
        printf("%d\n",C[i]);
    }
    else
        for(i=C[p-1]+1;i<=n-k+p+1;++i)
        {
            C[p]=i;
            back(p+1);
        }
}

int main()
{
    int i;

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

    scanf("%d%d",&n,&k);
    for(i=1;i<=n-k+1;++i)
    {
        C[0]=i;
        back(1);
    }
    return 0;
}