#include<bits/stdc++.h>
using namespace std;
using ll=long long;
using pii=pair<int,int>;

#define all(a) a.begin(),a.end()
#define pb push_back
#define sz(a) ((int)a.size())

signed main(){
    ios_base::sync_with_stdio(0),cin.tie(0);
    int t; cin >> t;
    while(t--){
        int a,b,c,d; cin >> a >> b >> c >> d; if(c<d) swap(a,b),swap(c,d);
        if(a>b){
            if(a<=c) cout << c-a+(b<=d?d-b:d+1) << "\n";
            else cout << c+d+2+(b==1) << "\n";
        }
        else{
            if(a<=c) cout << c-a+d+1 << "\n";
            else cout << c+d+2 << "\n";
        }
    }
}