#include<iostream>
#include<cctype>
using namespace std;
int main(){
    char ch='e';
    if(isalpha()){
        if(ch=='a'|| ch=='e' || ch=='i' || ch=='o' || ch=='u'|| ch=='A' || ch=='E' || ch=='I' || ch=='O' || ch=='U'){
            cout<<ch<<" is vowel"<<endl;
        }else{
            cout<<ch<<" is consonant"<<endl;
        }
    }
    else{
        cout<<ch<<" is not alphabet"<<endl;
    }
}