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#include <bits/stdc++.h>
using namespace std;
int n, m;
void dfs(int u, string s,int pre ){
if(u==m+1){
cout << s << endl;
return;
}
for (int i = pre+1; i <=n ; i++){
if(s=="")
dfs(u + 1, to_string(i), i);
else
dfs(u + 1, s + " " + to_string(i), i);
}
}
int main() {
cin >> n >> m;
dfs(1, "", 0);
return 0;
}