#include<iostream>
using namespace std;
int n,m;
void dfs(int u,int sum,int state)
{
if(n-u+sum<m) return;
if(sum==m)
{
for(int i=0;i<n;i++)
{
if(state>>i&1)cout<<i+1<<" ";
}
cout<<endl;
return;
}
if(u==n)return;
dfs(u+1,sum+1,state|1<<u);
dfs(u+1,sum,state);
}
int main()
{
cin>>n>>m;
dfs(0,0,0);
}