#include<bits/stdc++.h>
using namespace std;

#define rep(i, a, n) for(int i=(a); i<(n); ++i)
#define per(i, a, n) for(int i=(a); i>(n); --i)
#define pb emplace_back
#define mp make_pair
#define clr(a, b) memset(a, b, sizeof(a))
#define all(x) (x).begin(),(x).end()
#define lowbit(x) (x & -x)
#define fi first
#define se second
#define lson o<<1
#define rson o<<1|1
#define gmid l[o]+r[o]>>1
 
using ll = long long;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll, ll>;
using ui = unsigned int;
 
constexpr int mod = 998244353;
constexpr int inf = 0x3f3f3f3f;
constexpr ll infll = (ll)1e18;
constexpr double EPS = 1e-8;
const double PI = acos(-1.0);

constexpr int N = 2e5 + 10;

int T, a, b, c;
ll x, y, z, w;
int idx[10][10];

struct Edge{
  int from, to, cap, flow;
  ll cost;
  Edge(){}
  Edge(int from, int to, int cap, ll cost):from(from),to(to),cap(cap),cost(cost){
    flow = 0;
  }
};
vector<Edge> G;
vector<int> V[10];
int A[10], P[10];
ll d[10];
bool inq[10];

void add_edge(int from, int to){
  G.pb(from, to, 0, 0);
  G.pb(to, from, 0, 0);
  int x = G.size();
  idx[from][to] = x - 2;
  V[from].pb(x - 2);
  V[to].pb(x - 1);
}

void upd(int id, int cap, ll cost){
  G[id].cap = cap;
  G[id].cost = cost;
  G[id^1].cost = -cost;
}

bool BellmanFord(int &flow, ll &cost){
  rep(i, 1, 6){
    d[i] = infll;
    inq[i] = 0;
  }
  d[0] = 0;
  A[0] = inf;
  P[0] = -1;
  queue<int> Q;
  inq[0] = 1;
  Q.push(0);
  while(!Q.empty()){
    int x = Q.front(); Q.pop();
    inq[x] = 0;
    for(int y : V[x]){
      Edge &e = G[y];
      if(e.cap > e.flow && d[e.to] > d[x] + e.cost){
        d[e.to] = d[x] + e.cost;
        A[e.to] = min(A[x], e.cap - e.flow);
        P[e.to] = y;
        if(!inq[e.to]){
          inq[e.to] = 1;
          Q.push(e.to);
        }
      }
    }
  }
  if(d[5] == infll) return 0;
  flow += A[5];
  cost += A[5] * d[5];

  int x = 5;
  while(x){
    G[P[x]].flow += A[5];
    G[P[x]^1].flow -= A[5];
    x = G[P[x]].from;
  }

  return 1;
}

ll solve(int t){
  for(auto &e : G)  e.flow = 0;
  upd(idx[0][1], a, 0);
  upd(idx[0][2], t, 0);
  upd(idx[1][3], b - t, -x);
  upd(idx[1][4], a, -z);
  upd(idx[2][4], t, -y);
  upd(idx[3][4], b - t, -w + x);
  upd(idx[3][5], b - t, 0);
  upd(idx[4][5], c, 0);

  int flow = 0;
  ll cost = 0;
  while(BellmanFord(flow, cost));
  return -cost;
}

void _main(){
  add_edge(0, 1);
  add_edge(0, 2);
  add_edge(1, 3);
  add_edge(1, 4);
  add_edge(2, 4);
  add_edge(3, 4);
  add_edge(3, 5);
  add_edge(4, 5);

  cin >> T;
  while(T--){
    cin >> a >> b >> c;
    cin >> x >> y >> z >> w;
    ll ans = 0;
    rep(i, 0, b + 1){
      ans = max(ans, solve(i));
    }
    cout << ans << '\n';
  }
}

int main(){
  ios::sync_with_stdio(0);
  cin.tie(0); cout.tie(0);
  _main();
  return 0;
}