#!/usr/bin/env python3
import math

def iterate(a, b, c):
    for a in range(a, a + 4):
        for b in range(b, b + 4):
            for c in range(c, c + 4):
                yield a, b, c
                yield max(b + 1, a), b, max(max(b + 1, a) + 1, c)
                yield max(max(b + 1, c) + 1, a), b, max(b + 1, c)
                yield a, max(max(a + 1, c) + 1, b), max(a + 1, c)
                yield max(c + 1, a), max(max(c + 1, a) + 1, b), c

def solve(a, b, c, x, y, z):
    ans = math.inf
    for na, nb, nc in iterate(a, b, c):
        da = na - a
        db = nb - b
        dc = nc - c
        na, nb, nc = a - db - dc, b - dc - da, c - da - db
        if na != nc and ((na < nb and nb > nc) or (na > nb and nb < nc)):
            if na >= 1 and nb >= 1 and nc >= 1:
                ans = min(ans, y * da + z * db + x * dc)
    if math.isinf(ans):
        return -1
    return ans

for _ in range(int(input())):
    print(solve(*map(int, input().split())))