t=int(input())
abcxyz=[list(map(int,input().split())) for _ in range(t)]
ai,bi,ci=0,1,2
for a,b,c,x,y,z in abcxyz:
	ans=10**18
	ary=[a,b,c]
	cost=[x,y,z]

	for i1,i2,i3 in [(ai,ci,bi),(bi,ci,ai),(bi,ai,ci),(ci,ai,bi)]:
		s1=ary[i1]
		s2=ary[i2]
		s3=ary[i3]
		t1=s1
		t2=min(s2,t1-1)
		tmp=(s2-t2)*cost[i2]
		t3=min(s3,t2-1)
		tmp+=(s3-t3)*cost[i3]
		if t3>0:
			ans=min(ans,tmp)
	if ans==10**18:
		print(-1)
	else:
		print(ans)