#include<bits/stdc++.h>
using namespace std;
int main(){
	int n, x, y;
	cin>>n>>x>>y;
	//(x,y)同一行
	for(int i=1;i<=n;i++)//枚举行
		for(int j=1;j<=n;j++)//枚举列
		{
			//第i行第j列
			if(i==x)
				cout<<"("<<i<<","<<j<<")"<<" "; 
		} 
	cout<<"\n"; 
	//(x,y)同一列
	for(int i=1;i<=n;i++)//枚举行
		for(int j=1;j<=n;j++)//枚举列
		{
			//第i行第j列
			if(j==y)
				cout<<"("<<i<<","<<j<<")"<<" "; 
		} 
	cout<<"\n";
	//(x,y)左上到右下斜线 
	for(int i=1;i<=n;i++)//枚举行
		for(int j=1;j<=n;j++)//枚举列
		{
			//第i行第j列
			if(x-y==i-j)
				cout<<"("<<i<<","<<j<<")"<<" "; 
		} 
	cout<<"\n";
	//(x,y)左下到右上斜线
	for(int i=n;i>=1;i--)//枚举行
		for(int j=1;j<=n;j++)//枚举列
		{
			//第i行第j列
			if(x+y==i+j)
				cout<<"("<<i<<","<<j<<")"<<" "; 
		} 
	cout<<"\n";
	return 0;
}