#include <iostream>
#include <fstream>

using namespace std;

int sol[20];
int n,m;

void read()
{
    scanf("%d %d",&n,&m);
    sol[0]=0;
}

void show()
{
    for(int i=1;i<=m;i++)
        printf("%d ",sol[i]);
    printf("\n");
}
void bt(int k)
{
    if(k==m+1)
        show();
    else
        for(int i=sol[k-1]+1;i<=n;i++)
            {sol[k]=i;
            bt(k+1);}
}
int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    read();
    bt(1);
    return 0;
}