Problem:
Score : 100 points

Problem Statement

Given a lowercase English letter c, determine whether it is a vowel. Here, there are five vowels in the English alphabet: a, e, i, o and u.

Constraints

c is a lowercase English letter.

Input

The input is given from Standard Input in the following format:

c

Output

If c is a vowel, print vowel. Otherwise, print consonant.

Sample Input 1

a

Sample Output 1

vowel

Since a is a vowel, print vowel.

Sample Input 2

z

Sample Output 2

consonant

Sample Input 3

s

Sample Output 3

consonant

Solution in OCaml (4.02.3) (judge verdict: Wrong Answer)

let _ =
	read_line ()
	|> (fun n -> ["a";"i";"u";"e";"o"]
			|> List.map (fun x -> x = n)
			|> List.fold_left (fun x y -> x || y) false)
	|> (fun p ->
		if p
		then print_string "vowel"
		else print_string "constant"
		)