#include<bits/stdc++.h> using namespace std; int n,l; string s; int main(){ cin>>n; for(int i=0;i<n;i++){ cin>>s; l=s.length(); for(int j=0;j<l;j++){ if((s[j]>='A' && s[j]<='Z') && (s[j]!='A' && s[j]!='E' && s[j]!='I' && s[j]!='O' && s[j]!='U')){ s[j]+=32; } if((s[j]>='a' && s[j]<='z') && (s[j]=='a' || s[j]=='e' || s[j]=='i' || s[j]=='o' || s[j]=='u')){ s[j]-=32; } } cout<<s<<endl; } return 0; }