#include<bits/stdc++.h>
using namespace std;
int main()
{
    int k;
    cin>>k;
    for(int i=1;i<=k;i++)
    {
        string s1;
        cin>>s1;
        int n=s1.size();
        for(int j=0;j<n;j+=2)
        {
            swap(s1[j],s1[j+1]);
        }
        cout<<s1<<endl;
    }
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int c;

	cin>>c;
    for(int i=1;i<=c;i++){
		string s1;
		cin>>s1;
		for(int i=0;i<=s1.size()-1;i+=2){
        	int temp=s1[i+1];
			s1[i+1]=s1[i];
			s1[i]=temp;
    	}
		cout<<s1<<endl;
	}

	return 0;
}

#include <bits/stdc++.h> using namespace std; int main() { int k; cin>>k; for(int i=1;i<=k;i++) { string s1; cin>>s1; int n=s1.size(); for(int j=0;j<n;j+=2) { swap(s1[j],s1[j+1]); } cout<<s1<<endl; } return 0; }

#include<bits/stdc++.h>
using namespace std;
int main(){
     int t;
     cin>>t;
     while(t--){
          string s;
          cin>>s;
          if(s.size()==1){
               cout<<s<<endl;
          }
          else{
               for(int i=0,j=1;i<s.size(),j<s.size();i+=2,j+=2){
                    swap(s[i],s[j]);
               }
               cout<<s<<endl;
          }
          
     }
     return 0;
}