#include<iostream> using namespace std; int main(){ int n; char c[51]; scanf("%d",&n); for(int i=1;i<=n;i++){ scanf("%s",c); int j=0; while(c[j]!='\0'){ if(j%2==0) cout<<c[j+1]; else cout<<c[j-1]; j++; } cout<<endl; } return 0; }