function main(a){
	var reg=/[aiueo]/;
	(reg.test(a))?op("vowel"):op("consonant");
}
function op(a){
	console.log(a);
}
function stn(a){
		return a.map(function(x){return parseInt(x,10);});
}
main(require("fs").readFileSync("/dev/stdin", "utf8"));