#include <iostream>
#include <fstream>
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");
int v[20],n,k;

void afis(){
    for(int i=1;i<=k;++i) out<<v[i];
    out<<'\n';
}

int backtrack(int j){
    if(j-1==k) afis();
    else {
    for(int i=v[j-1]+1;i<=n-k+j;++i){
        if(v[j-1]<i){
                v[j]=i;
                backtrack(j+1);}
     }
}
}
int main()
{
    in>>n>>k;
    backtrack(1);
    return 0;
}