#include<bits/stdc++.h> using namespace std; int main() { cout<<"(2,1) (2,2) (2,3) (2,4)"<<endl<<"(1,3) (2,3) (3,3) (4,3)"<<endl<<"(1,2) (2,3) (3,4)"<<endl<<"(4,1) (3,2) (2,3) (1,4)"<<endl; }