#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()
const int mod=998244353;
void mul(int &a,int b){
	a=1ll*a*b%mod;
}
void add(int &a,int b){
	a+=b;
	if(a>=mod) a-=mod;
}
int main(){
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	int n;
	cin>>n;
	string s[n+5];
	auto cnt=vector(11,vector(26,vector(26,0)));
	for(int i=1;i<=n;i++){
		cin>>s[i];
		string t=s[i];
		reverse(all(t));
		if(t<s[i]) s[i]=t;
	}
	sort(s+1,s+n+1);
	for(int i=1;i<=n;i++){
		if(i>1&&s[i]==s[i-1]) continue;
		cnt[s[i].size()][min(s[i][0],s[i].back())-'a'][max(s[i][0],s[i].back())-'a']++;
		if(s[i][0]==s[i].back()){
			string t=s[i];
			reverse(all(t));
			if(s[i]!=t){
				cnt[s[i].size()][min(s[i][0],s[i].back())-'a'][max(s[i][0],s[i].back())-'a']++;
			}
		}
	}
	int pos=1679616;
	int ans=0;
	for(int a=3;a<=10;a++){
		for(int i=0;i<pos;i++){
			int cur=1,c[8];
			int x=i;
			for(int j=0;j<8;j++){
				c[j]=x%6;
				x/=6;
			}
			for(int j=0;j<4;j++){
				mul(cur,cnt[a][min(c[j],c[(j+1)%4])][max(c[j],c[(j+1)%4])]);
				mul(cur,cnt[a][min(c[j+4],c[(j+1)%4+4])][max(c[j+4],c[(j+1)%4+4])]);
				mul(cur,cnt[a][min(c[j],c[j+4])][max(c[j],c[j+4])]);
			}
			add(ans,cur);
		}
	}
	cout<<ans;
}
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