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 Ruby (2.3.3) (judge verdict: Wrong Answer)

s = gets.chomp
s.gsub!("dreameraser", "")
s.gsub!("dreamerase", "")
s.gsub!("dreamdream", "")
s.gsub!("dreamer", "")
s.gsub!("eraser", "")
s.gsub!("erase", "")

if s.empty? then
  puts "YES"
else
  puts "NO"
end