#include <iostream> #include <string> using namespace std; int main() { int c; cin >> c; cin.get(); for (int i = 0; i < c; ++i) { string s; getline(cin, s); for (int j = 0; j < s.length(); j += 2) { swap(s[j], s[j+1]); } cout << s << endl; } return 0; }