#include<bits/stdc++.h>
using namespace std;
#include<atcoder/all>
using namespace atcoder;
using ll = long long;
ll A,B,C,D;

void solve(){
	ll ans = C+D+2;
	if(A==1||B==1)ans = C+D+3;
	for(int isA = 0;isA<2;isA++){
		for(int isB = 0;isB<2;isB++){
			if(isA==0&&isB==0){
				if((A<B)==(C<D)&&A<=C&&B<=D){
					ans = min(ans,C-A+D-B);
				}
			}else if(isA==0&&isB==1){
				if(C>D&&A<=C){
					ans = min(ans,C-A+D+1);
				}
			}else if(isA==1&&isB==0){
				if(C<D&&B<=D){
					ans = min(ans,D-B+C+1);
				}
			}
		}
	}
	cout<<ans<<endl;
}

signed main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	int t;
	cin >> t;
	while(t--){
		cin >> A >> B >> C >> D;
		solve();
	}
}