#include <iostream>

using namespace std;

int viz[20], N, K, last=1;

void afis()
{
    for(int i=1;i<=N;i++)
        if(viz[i])
            printf("%d ",i);
    printf("\n");
}

void back(int x)
{
    if(x==K)
        afis();
    else if(x<K)
    {
        for(int i=last;i<=N;i++)
            if(!viz[i])
            {
                last=i;
                viz[i]=1;
                back(x+1);
                viz[i]=0;
            }
    }
}

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