#include <fstream>
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");

short unsigned int n,x,st[100];

void output(int k)
{
    for(short unsigned int i=1; i<=k; i++)
    {
        out<<st[i]<<" ";
    }
    out<<"\n";

}

bool sol (short unsigned int k )
{
    return ( k == x );
}

void back(short unsigned int k)
{
    for(short unsigned int i = st[k-1]+1; i<=n; i++)
    {
        st[k]=i;
        if(sol(k))
            output(k);
        else
            back(k+1);
    }

}

int main(void)
{
    in>>n>>x;
    back(1);
}