#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
const Int INF = 1e18;
Int p1_1(Int a,Int b,Int c,Int x,Int y,Int z){
  // a < b > c, a < c < b
  Int res=0;
  while(a>=c) a--,b--,res+=x;
  while(c>=b) a--,c--,res+=z;
  assert(a < c && c < b);
  if(min({a,b,c})<=0) return INF;
  return res;
}

Int p1(Int a,Int b,Int c,Int x,Int y,Int z){
  // a < b > c
  return min(p1_1(a,b,c,x,y,z),p1_1(c,b,a,y,x,z));
}

Int p2_1(Int a,Int b,Int c,Int x,Int y,Int z){
  // a > b < c, b < a < c
  Int res=0;
  while(b>=a) b--,c--,res+=y;
  while(a>=c) a--,b--,res+=x;
  assert(b < a && a < c);
  if(min({a,b,c})<=0) return INF;
  return res;
}

Int p2(Int a,Int b,Int c,Int x,Int y,Int z){
  // a > b < c
  return min(p2_1(a,b,c,x,y,z),p2_1(c,b,a,y,x,z));
}

signed solve(){
  Int a,b,c,x,y,z;
  cin>>a>>b>>c>>x>>y>>z;
  Int ans=min(p1(a,b,c,x,y,z),p2(a,b,c,x,y,z));
  if(ans==INF) ans=-1;
  cout<<ans<<endl;
  return 0;
}

signed main(){
  Int T;
  cin>>T;
  while(T--) solve();
  return 0;
}