#include <bits/stdc++.h>
#define LLI long long int
#define FOR(v, a, b) for(LLI v = (a); v < (b); ++v)
#define FORE(v, a, b) for(LLI v = (a); v <= (b); ++v)
#define REP(v, n) FOR(v, 0, n)
#define REPE(v, n) FORE(v, 0, n)
#define REV(v, a, b) for(LLI v = (a); v >= (b); --v)
#define ALL(x) (x).begin(), (x).end()
#define RALL(x) (x).rbegin(), (x).rend()
#define ITR(it, c) for(auto it = (c).begin(); it != (c).end(); ++it)
#define RITR(it, c) for(auto it = (c).rbegin(); it != (c).rend(); ++it)
#define EXIST(c,x) ((c).find(x) != (c).end())
#define fst first
#define snd second
#define popcount __builtin_popcount
#define UNIQ(v) (v).erase(unique(ALL(v)), (v).end())
#define bit(i) (1LL<<(i))

#ifdef DEBUG
#include <misc/C++/Debug.cpp>
#else
#define dump(...) ((void)0)
#endif

#define gcd __gcd

using namespace std;
template <class T> constexpr T lcm(T m, T n){return m/gcd(m,n)*n;}

template <typename I> void join(ostream &ost, I s, I t, string d=" "){for(auto i=s; i!=t; ++i){if(i!=s)ost<<d; ost<<*i;}ost<<endl;}
template <typename T> istream& operator>>(istream &is, vector<T> &v){for(auto &a : v) is >> a; return is;}
template <typename T, typename U> bool chmin(T &a, const U &b){return (a>b ? a=b, true : false);}
template <typename T, typename U> bool chmax(T &a, const U &b){return (a<b ? a=b, true : false);}
template <typename T, size_t N, typename U> void fill_array(T (&a)[N], const U &v){fill((U*)a, (U*)(a+N), v);}

struct Init{
  Init(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(12);
    cerr << fixed << setprecision(12);
  }
}init;


struct Problem{
  const LLI A, B, C, X, Y, Z;
  LLI ans;
  Problem(LLI A, LLI B, LLI C, LLI X, LLI Y, LLI Z): A(A), B(B), C(C), X(X), Y(Y), Z(Z), ans(LLONG_MAX){}
  
  void is_kadomatsu(LLI a, LLI b, LLI c){
    if(a <= 0 or b <= 0 or c <= 0) return;
    if(a == b or b == c or c == a) return;
    if(a < b and b < c) return;
    if(a > b and b > c) return;

    if(a > A or b > B or c > C) return;
    
    chmin(ans, (A-a) * X + (B-b) * Y + (C-c) * Z);
  }

  void solve(){
    vector<LLI> p;

    FORE(i,-5,5){
      p.push_back(A+i);
      p.push_back(B+i);
      p.push_back(C+i);
    }

    sort(ALL(p));
    UNIQ(p);
    
    dump(p);

    for(auto i : p){
      for(auto j : p){
        for(auto k : p){
          is_kadomatsu(i, j, k);
        }
      }
    }

    if(ans == LLONG_MAX) ans = -1;
  }
};




int main(){
  int T;
  while(cin >> T){
    REP(i,T){
      LLI a,b,c,x,y,z; cin >> a >> b >> c >> x >> y >> z;

      auto p = Problem(a,b,c,x,y,z);
      p.solve();
      cout << p.ans << endl;
    }
  }

  return 0;
}