#include <iostream>
#include <fstream>
#include <string>
using namespace std;

void check(string s){
	bool vowel;
	bool vowelflag = false;
	bool valid1 = true;
	int state = 0;
	char previous = 0;
	for(int i = 0 ; i < s.size() ; i ++){
		if(s[i] == 'a' || s[i] == 'i' || s[i] == 'u' || s[i] == 'e' || s[i] == 'o'){
			vowel = true;
		}else{
			vowel = false;
		}
		if(vowel == true) vowelflag = true;
		if(vowel == true){
			switch(state){
				case 0:
					state = 1;
					break;
				case 1:
					state = 2;
					break;
				case 2:
					//cout << "boin" << endl;
					valid1 = false;
					state = 3;
					break;
				case 3:
					break;
				case 4:
					state = 1;
					break;
				case 5:
					state = 1;
					break;
				case 6:
					state = 1;
					break;
			}
		}else{
			switch(state){
				case 0:
					state = 4;
					break;
				case 1:
					state = 4;
					break;
				case 2:
					state = 4;
					break;
				case 3:
					state = 4;
					break;
				case 4:
					state = 5;
					break;
				case 5:
					valid1 = false;
					//cout << "siin" << endl;
					state = 6;
					break;
				case 6:
					state = 1;
					break;
			}
		}
		if(previous == s[i] && previous != 'e' && previous != 'o') valid1 = false;
		previous = s[i];
	}
	if(vowelflag == true && valid1 == true){
		cout << "<" << s << "> is acceptable." << endl;
	}else{
		cout << "<" << s << "> is not acceptable." << endl;
	}
}

int main(void)
{
	ifstream in("say.txt");
	string s;
	while(in >> s){
		if(s == "end"){
			return 0;
		}
		check(s);
	}
	return 0;
}