#include <iostream>
using namespace std;
#include <fstream>
unsigned n,m,st[20];
ofstream g("combinari.out");


void tipar ()
{
    unsigned i;
    for(i=1;i<=m;i++)
        g<<st[i]<<" ";
    g<<"\n";
}

void bt(unsigned k)
{
    st[k]=st[k-1];
    while (st[k]<n)
        {st[k]++;
            {if(k==m)
                tipar();
    else bt(k+1);}}
        }

int main(){
    ifstream f("combinari.in");
f>>n>>m;
st[0]=0;
    bt(1);
f.close();
g.close();
    return 0;}