#include <bits/stdc++.h>
using namespace std;
int main(){
  int T;
  cin >> T;
  for (int i = 0; i < T; i++){
    int A, B, C, D;
    cin >> A >> B >> C >> D;
    if (A < B){
      swap(A, B);
      swap(C, D);
    }
    if (C > D){
      if (A <= C){
        if (B <= D){
          cout << (C - A) + (D - B) << endl;
        } else {
          cout << (C - A) + 1 + D << endl;
        }
      } else {
        if (B > 1){
          cout << 3 + (C - 1) + D << endl;
        } else {
          cout << 4 + (C - 1) + D << endl;
        }
      }
    } else {
      if (B <= D){
        cout << 1 + C + (D - B) << endl;
      } else {
        cout << 3 + C + (D - 1) << endl;
      }
    }
  }
}