#include <bits/stdc++.h>
using namespace std;

int main(){
	string s;
	getline(cin,s);
	for(int i = 0;i < s.size();i++){
		s[i] = tolower(s[i]);
		
		if(s[i]=='a'||s[i]=='e'||s[i]=='i'||s[i]=='o'||s[i]=='u'){
			s[i] = toupper(s[i]);
		}else{
			s[i] = tolower(s[i]);
		}
	}
	cout<<s;
	return 0;
}

/**************************************************************
	Problem: 1981
	User: admin
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2076 kb
****************************************************************/