import sys
input = sys.stdin.readline
from itertools import permutations

def calc1(A,B,C,ANS):
    M=min(A,B)
    A-=M
    B-=M
    ANS+=M*X
    return A,B,C,ANS

def calc2(A,B,C,ANS):
    M=min(B,C)
    B-=M
    C-=M
    ANS+=M*Y
    return A,B,C,ANS

def calc3(A,B,C,ANS):
    M=min(C,A)
    C-=M
    A-=M
    ANS+=M*Z
    return A,B,C,ANS

def calc4(A,B,C,ANS):
    M=min(A,B,C)
    A-=M
    B-=M
    C-=M
    ANS+=M*W
    return A,B,C,ANS
    

T=int(input())
for tests in range(T):
    A0,B0,C0=map(int,input().split())
    X,Y,Z,W=map(int,input().split())
    LANS=0

    L=list(permutations(range(4)))

    for lx in L:
        A=A0
        B=B0
        C=C0
        ANS=0
        for com in lx:
            if com==0:
                A,B,C,ANS=calc1(A,B,C,ANS)
            if com==1:
                A,B,C,ANS=calc2(A,B,C,ANS)
            if com==2:
                A,B,C,ANS=calc3(A,B,C,ANS)
            if com==3:
                A,B,C,ANS=calc4(A,B,C,ANS)

        LANS=max(ANS,LANS)

        if A0>0 and B0>0 and C0>0:
            A=A0-1
            B=B0-1
            C=C0-1
            ANS=W

            for com in lx:
                if com==0:
                    A,B,C,ANS=calc1(A,B,C,ANS)
                if com==1:
                    A,B,C,ANS=calc2(A,B,C,ANS)
                if com==2:
                    A,B,C,ANS=calc3(A,B,C,ANS)
                if com==3:
                    A,B,C,ANS=calc4(A,B,C,ANS)

            LANS=max(ANS,LANS)

    print(LANS)