#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <atcoder/modint>
using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
#define rep(i,n) for(int i=0; i<(int)(n); i++)
const i64 INF = 1001001001001001001;

using Modint = atcoder::static_modint<998244353>;


int main(){
    int T; cin >> T;
    while(T--){
        i64 a,b,c,d; cin >> a >> b >> c >> d;
        if(c > d){ swap(a,b); swap(c,d); }
        i64 ans = INF;
        if(b <= d) ans = min(ans, d - b + c + 1);
        if(b <= d && a <= c && a < b) ans = min(ans, (c-a) + (d-b));
        if(d < b){
            i64 q = max<i64>(0, d-a+1);
            ans = min(ans, (d+1) + q + (c+1));
        }
        if(d < b){
            i64 q = 0;
            if(a == 1) q++;
            ans = min(ans, (d+1) + q + (c+1));
        }
        cout << ans << endl;
    }
    return 0;
}



struct ios_do_not_sync{
    ios_do_not_sync(){
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} ios_do_not_sync_instance;