#include <cstdio>
using namespace std;

int n,k,v[19];

void backtracking(int i)
{
    for(int x=v[i-1]+1;x<=n;x++)
    {
        v[i]=x;
        if(i==k)
        {
            for(int j=1;j<=k;j++) printf("%d ",v[j]);
            printf("\n");
        }
        else backtracking(i+1);
    }
}

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d",&n,&k);
    backtracking(1);
    return 0;
}