def main():
    import sys
    input = sys.stdin.readline

    T = int(input())
    for _ in range(T):
        A, B, C, x, y, z = map(int, input().split())
        # b max
        if B <= 2:
            ans1 = 10**20
        else:
            ans1 = 0
            a = A
            b = B
            c = C
            if a >= b:
                ans1 += x * (a - (b-1))
                a = b-1
            if c >= b:
                ans1 += z * (c - (b-1))
                c = b-1
            if a == c:
                ans1 += min(x, z)

        # b min
        a, b, c = A, B, C
        if a == 1 or c == 1 or a == c == 2:
            ans2 = 10**20
        else:
            ans2 = 0
            if a == c:
                if x < z:
                    ans2 += x
                    a -= 1
                else:
                    ans2 += z
                    c -= 1
            ans2 += y * max(b - (min(a, b, c) - 1), 0)
        ans = min(ans1, ans2)
        if ans == 10**20:
            print(-1)
        else:
            print(ans)


if __name__ == '__main__':
    main()