//#pragma GCC optimize ("O3")
//#pragma GCC target ("avx")
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < (n); i++)
#define rep1(i, n) for(int i = 1; i <= (n); i++)
#define co(x) cout << (x) << "\n"
#define cosp(x) cout << (x) << " "
#define ce(x) cerr << (x) << "\n"
#define cesp(x) cerr << (x) << " "
#define pb push_back
#define mp make_pair
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
#define Would
#define you
#define please


int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);


	int T;
	cin >> T;

	rep(i, T) {
		ll a, b, c, x, y, z;
		cin >> a >> b >> c >> z >> x >> y;

		ll saishou = 5e18;

		ll at = a, bt = b, ct = c;
		ll tmp = 0;
		if (at <= bt) {
			ll kari = (bt - at + 1);
			tmp += kari * x;
			bt -= kari;
			ct -= kari;
		}
		if (ct <= at) {
			ll kari = (at - ct + 1);
			tmp += kari * z;
			at -= kari;
			bt -= kari;
		}
		if (bt >= 1) chmin(saishou, tmp);

		at = a; bt = b; ct = c;
		tmp = 0;
		if (ct <= bt) {
			ll kari = (bt - ct + 1);
			tmp += kari * z;
			at -= kari;
			bt -= kari;
		}
		if (at <= ct) {
			ll kari = (ct - at + 1);
			tmp += kari * x;
			bt -= kari;
			ct -= kari;
		}
		if (bt >= 1) chmin(saishou, tmp);

		at = a; bt = b; ct = c;
		tmp = 0;
		if (max(at, ct) >= bt) {
			ll kari = (max(at, ct) - bt + 1);
			tmp += kari * y;
			at -= kari;
			ct -= kari;
		}
		if (at == ct) {
			if (bt == at + 1) {
				tmp += y;
				at--;
			}
			tmp += min(x, z);
			at--;
		}
		if (min(at, ct) >= 1) chmin(saishou, tmp);

		if (saishou < 4e18) co(saishou);
		else co(-1);
	}


	Would you please return 0;
}