#include <iostream>
#include <cstdio>

using namespace std;

int x[20],n,m;

void back(int k)
{
    if(k==m+1)
    {
        for(int i=1;i<k;i++)
            printf("%d ",x[i]);
        printf("\n");
        return;
    }
    for(x[k]=x[k-1]+1;x[k]<=n;x[k]++)
        back(k+1);
}

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

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

    back(1);
    return 0;
}