public class Program {
public static void Main() {
string line;
while ((line = System.Console.ReadLine ()) !=
null) { // 注意 while 处理多个 case
if (line == "A" || line == "a" || line == "E" || line == "e" || line == "I" ||
line == "i" || line == "O" || line == "o" || line == "U" || line == "u")
System.Console.WriteLine("Vowel");
else
System.Console.WriteLine("Consonant");
}
}
}

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