#include<bits/stdc++.h>
using namespace std;
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n,ans=0;
	cin>>n;
	string s1[n+1],s2[n+1],s3;
	for(int i=1;i<=n;i++) cin>>s1[i]>>s3>>s3>>s2[i];
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			for(int k=1;k<=n;k++){
				for(int o=1;o<=n;o++){
					for(int p=1;p<=n;p++){
						for(int q=1;q<=n;q++){
							if(s1[i]==s2[o]&&s2[i]==s1[j]&&s1[k]==s2[j]&&s1[o]==s2[k]&&s1[i]==s1[p]&&s1[q]==s1[j]&&s1[k]==s2[p]&&s2[q]==s1[o]) ans++;
						}
					}
				}
			}
		}
	}
	cout<<ans;
	return 0;
}