#include<bits/stdc++.h>
using namespace std;
int n,j;
string s;
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>s;
		for(j=0;j<s.size();j++)
			if((s[j]>='a'&&s[j]<='z')||(s[j]>='A'&&s[j]<='Z')) break;
		if(s[j]>='a'&&s[j]<='z') s[j]-=32;
		for(int k=j+1;k<s.size();k++)
			if(s[k]>='A'&&s[k]<='Z') s[k]+=32;
		cout<<s<<endl;
	}
    return 0;
}