#include <bits/stdc++.h>
using namespace std;
string s;
int main(){
    while(true){
        cin >> s;
        if(s == "end") break;
        int vow = 0, con = 0;
        bool hasVow = false, isImp = false;
        for(int i = 0; i < s.size(); i++){
            if(s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' || s[i] == 'u'){
                vow++;
                con = 0;
                hasVow = true;
            } else {
                con++;
                vow = 0;
            }
 
            if(con == 3 || vow == 3) isImp = true;
            if(i < (s.size() - 1) && s[i] != 'e' && s[i] != 'o' && s[i] == s[i - 1]) isImp = true;
        }
        if(isImp || !hasVow) cout << "<" << s << "> is not acceptable.\n";
        else cout << "<" << s << "> is acceptable.\n";
    }
}

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YQp0dgpwdG91aQpib250cmVzCnpvZ2dheAp3aWlucQplZXAKaG91Y3R1aAplbmQ=

a
tv
ptoui
bontres
zoggax
wiinq
eep
houctuh
end