#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;
typedef long long int ll;
typedef long double ld;
#define FOR(i,l,r) for(ll i=l;i<r;i++)
#define REP(i,n) FOR(i,0,n)
#define RFOR(i,l,r) for(ll i=r-1;i>=l;i--)
#define RREP(i,n) RFOR(i,0,n)
#define ALL(x) x.begin(),x.end()
#define PA pair<ll,ll>
#define F first
#define S second
#define BS(A,x) binary_search(ALL(A),x)
#define LB(A,x) (ll)(lower_bound(ALL(A),x)-A.begin())
#define UB(A,x) (ll)(upper_bound(ALL(A),x)-A.begin())
#define COU(A,x) (UB(A,x)-LB(A,x))
#define sz(c) ((ll)(c).size())
//#include<boost/multiprecision/cpp_int.hpp>
//namespace mp=boost::multiprecision;
//using Bint=mp::cpp_int;
template<typename T>using min_priority_queue=priority_queue<T,vector<T>,greater<T>>;
template<typename T1,typename T2>ostream&operator<<(ostream&os,pair<T1,T2>&p){os<<p.F<<" "<<p.S;return os;}
template<typename T1,typename T2>istream&operator>>(istream&is,pair<T1,T2>&p){is>>p.F>>p.S;return is;}
template<typename T>ostream&operator<<(ostream&os,vector<T>&v){REP(i,sz(v))os<<v[i]<<(i+1!=sz(v)?" ":"");return os;}
template<typename T>istream&operator>>(istream&is,vector<T>&v){for(T&in:v)is>>in;return is;}
template<class T>bool chmax(T&a,T b){if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T&a,T b){if(b<a){a=b;return 1;}return 0;}
ld dist(ld x1,ld y1,ld x2,ld y2){return sqrtl((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));}
//using mint=modint1000000007;
using mint=modint998244353;
//const ll mod=1000000007;
const ll mod=998244353;
//using mint=modint;
ostream&operator<<(ostream&os,mint&a){os<<a.val();return os;}
int main(){
  ll T;cin>>T;
  while(T--){
    ll A,B,C,X,Y,Z;cin>>A>>B>>C>>X>>Y>>Z;
    ll ans=1e18;
    //132
    if(B>2&&C>1){
      ll c=min(C,B-1),a=min(A,c-1);
      chmin(ans,X*(A-a)+Z*(C-c));
    }
    //231
    if(B>2&&A>1){
      ll a=min(A,B-1),c=min(C,a-1);
      chmin(ans,X*(A-a)+Z*(C-c));
    }
    //312
    if(A>2&&C>1){
      ll c=min(C,A-1),b=min(B,c-1);
      chmin(ans,Y*(B-b)+Z*(C-c));
    }
    //213
    if(C>2&&A>1){
      ll a=min(A,C-1),b=min(B,a-1);
      chmin(ans,Y*(B-b)+X*(A-a));
    }
    if(ans==1e18)ans=-1;
    cout<<ans<<endl;
  }
  return 0;
}