#include <bits/stdc++.h>
#define pb push_back
#define int int64_t
#define pii pair<int, int>
#define X first
#define Y second
#define all(x) (x).begin(),(x).end()
#define lb lower_bound
#define ub upper_bound

using namespace std;

const int inf = 1e18;

void p(auto A){
	for(auto e : A)cout << e << ' ';
	cout << '\n';
}

void solve(){
	int n; cin >> n;
	vector<string>A(n);
	for(int i = 0; i< n; i++)cin >> A[i];
	vector<array<int, 3>>dp(n+1, {inf, inf, inf});
	auto xmin = [](int& a, int b){a = min(a, b);};
	
	dp[0][0] = 0;
	for(int i = 0; i< n; i++){
		dp[i+1][1] = dp[i][0] + 1;
		dp[i+1][2] = dp[i][1] + 1;
		int cons = 0;
		for(int j = 0; j< min((int)A[i].size(), (int)3); j++){
			if(A[i][j]=='A'||A[i][j]=='E'||A[i][j]=='O'||A[i][j]=='U'||A[i][j]=='Y'||A[i][j]=='I'){
				for(int k = 0; k< 3; k++)if(cons+k<=2){
					xmin(dp[i+1][0], dp[i][k] + j + 1);
				}
			}
			else cons++;
		}
	}
	int ans = inf;
	xmin(ans, dp[n][0]);
	xmin(ans, dp[n][1]);
	xmin(ans, dp[n][2]);
	if(ans == inf)cout << '*';
	else cout << ans;
}

	
		

signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	
	int t = 1;
	//cin >> t;
	while(t--)solve();
}


//freopen(".in", "r", stdin);
//freopen(".out", "w", stdout);