#!/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(b + 2, c)
                yield max(b + 2, a), b, max(b + 1, c)
                yield a, max(a + 1, b), c
                yield a, max(c + 1, b), c

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