#include<bits/stdc++.h> using namespace std; int main(){ string a; char a1; int c; cin>>c; for(int i=1;i<=c;i++){ cin>>a; int len=a.size(); for(int j=0;j<len;j+=2){ a1=a[j]; a[j]=a[j+1]; a[j+1]=a1; } cout<<a<<endl; } return 0; }