#include<cstdio>
using namespace std;
int i,n,m,v[20];
void backt(int k);
int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d%d",&n,&m);
    backt(1);
    return 0;
}
void backt(int k)
{
    int i=v[k-1]+1;
    if(k==m+1){for(i=1;i<=m;i++)printf("%d ",v[i]);printf("\n");}
    else while(i<=n)
            {v[k]=i;
            i++;
            backt(k+1);
            }
}