#include<bits/stdc++.h>
using namespace std;
int n,ans;
string s[1002][10];
int main(){
	cin>>n;
	for(int i=1;i<=n;i++) cin>>s[i][1]>>s[i][2]>>s[i][3]>>s[i][4];
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			for(int k=1;k<=n;k++){
				for(int l=1;l<=n;l++){
					for(int m=1;m<=n;m++){
						for(int o=1;o<=n;o++){
							if(s[i][4]==s[j][1]&&s[j][4]==s[k][1]&&s[k][4]==s[l][1]&&s[l][4]==s[i][1]&&s[m][1]==s[i][4]&&s[m][4]==s[l][1]&&s[o][1]==s[j][4]&&s[o][4]==s[i][1]) ans++;
						}
					}
				}
			}
		}
	}
	cout<<ans;
}