#include <iostream>   #include <cstdio>   #include <algorithm>   #include <bits/stdc++.h>   #define ALL(x) (x).begin(), (x).end()   #define sz(a) int(a.size())   #define rep(i,x,n) for(int i=x;i<n;i++)   #define repd(i,x,n) for(int i=x;i<=n;i++)   #define pii pair<int,int>   #define pll pair<long long ,long long>   #define gbtb ios::sync_with_stdio(false),cin.tie(0),cout.tie(0)   #define MS0(X) memset((X), 0, sizeof((X)))   #define MSC0(X) memset((X),   0 , sizeof((X)))   #define pb push_back   #define mp make_pair   #define fi first   #define se second   #define eps 1e-6   #define chu(x)  if(DEBUG_Switch) cout<< [ <<#x<<   <<(x)<< ] <<endl   #define du3(a,b,c) scanf( %d %d %d ,&(a),&(b),&(c))   #define du2(a,b) scanf( %d %d ,&(a),&(b))   #define du1(a) scanf( %d ,&(a));   using namespace std;   typedef long long ll;   ll gcd(ll a, ll b) {return b ? gcd(b, a % b) : a;}   ll lcm(ll a, ll b) {return a / gcd(a, b) * b;}   ll powmod(ll a, ll b, ll MOD) { if (a == 0ll) {return 0ll;} a %= MOD; ll ans = 1; while (b) {if (b & 1) {ans = ans * a % MOD;} a = a * a % MOD; b >>= 1;} return ans;}   ll poww(ll a, ll b) { if (a == 0ll) {return 0ll;} ll ans = 1; while (b) {if (b & 1) {ans = ans * a ;} a = a * a ; b >>= 1;} return ans;}   void Pv(const vector<int> &V) {int Len = sz(V); for (int i = 0; i < Len; ++i) {printf( %d , V[i] ); if (i != Len - 1) {printf(   );} else {printf(  n );}}}   void Pvl(const vector<ll> &V) {int Len = sz(V); for (int i = 0; i < Len; ++i) {printf( %lld , V[i] ); if (i != Len - 1) {printf(   );} else {printf(  n );}}}   inline long long readll() {long long tmp = 0, fh = 1; char c = getchar(); while (c <  0  || c >  9 ) {if (c ==  - ) { fh = -1; } c = getchar();} while (c >=  0  && c <=  9 ) { tmp = tmp * 10 + c - 48, c = getchar(); } return tmp * fh;}   inline int readint() {int tmp = 0, fh = 1; char c = getchar(); while (c <  0  || c >  9 ) {if (c ==  - ) { fh = -1; } c = getchar();} while (c >=  0  && c <=  9 ) { tmp = tmp * 10 + c - 48, c = getchar(); } return tmp * fh;}   void pvarr_int(int *arr, int n, int strat = 1) {if (strat == 0) {n--;} repd(i, strat, n) {printf( %d%c , arr[i], i == n ?   n  :    );}}   void pvarr_LL(ll *arr, int n, int strat = 1) {if (strat == 0) {n--;} repd(i, strat, n) {printf( %lld%c , arr[i], i == n ?   n  :    );}}   const int maxn = 1000010;   const int inf = 0x3f3f3f3f;   /*** TEMPLATE CODE * * STARTS HERE ***/   #define DEBUG_Switch 0   pll a[5];   int b[5];   int main()   {   #if DEBUG_Switch       freopen( D:  code  input.txt ,  r , stdin);   #endif       //freopen( D:  code  output.txt , w ,stdout);       int t;       t = readint();       while (t--) {           repd(i, 1, 4) {               a[i].fi = readint();               a[i].se = readint();               b[i] = i;           }           ll ans = 1e18;           do {               ll x1 = min(a[b[1]].fi, a[b[3]].fi), x2 = max(a[b[1]].fi, a[b[3]].fi), x3 = min(a[b[2]].fi, a[b[4]].fi), x4 = max(a[b[2]].fi, a[b[4]].fi);               ll y1 = min(a[b[1]].se, a[b[2]].se), y2 = max(a[b[1]].se, a[b[2]].se), y3 = min(a[b[3]].se, a[b[4]].se), y4 = max(a[b[3]].se, a[b[4]].se);               ll x_l, x_r, y_l, y_r;               ll cost_x, cost_y;               if (x4 < x1) {                   x_l = x_r = 0;                   cost_x = x2 - x3 + x1 - x4;               } else {                   x_l = max(x3 - x2, 0ll);                   x_r = x4 - x1;                   cost_x = x2 - x1 + x4 - x3;               }                  if (y4 < y1) {                   y_l = y_r = 0;                   cost_y = y2 - y3 + y1 - y4;               } else {                   y_l = max(y3 - y2, 0ll);                   y_r = y4 - y1;                   cost_y = y2 - y1 + y4 - y3;               }                  ll temp = cost_x + cost_y;               if (y_l > x_r) {                   temp += 2ll * (y_l - x_r);               } else if (x_l > y_r) {                   temp += 2ll * (x_l - y_r);               }               ans = min(ans, temp);           } while (next_permutation(b + 1, b + 1 + 4));           printf( %lld n , ans );       }          return 0;   }