def m():
	I,R=input,range
	S,N,B,x=R(3),R(2),[0]*6,[0]*4
	def J():
		return list(map(int,I().split()))
	def U():
		s,b,c=sum(x),1,0
		for j in R(4):b,c=b*(x[j]>=0),c+x[j]*X[j]
		for j in S:b*=s-x[j]<=B[j+2]
		return c if b else 0
	def V():
		m=0
		for k in R(6):B[k]=A[k%3]if k%3!=j else y
		for i in S:
			for k in S:x[k]=B[i+2]-B[k+2]
			x[3]=B[i]+B[i+1]-B[i+2]
			m=max(m,U())
		for w in N:
			x[3],x[0]=w,(B[0]+B[1]-B[2]-w)//2
			for k in N:x[1+k]=B[1-k]-x[0]-w
			m=max(m,U())
		return m
	for t in R(int(I())):
		A,X,a=J(),J(),0
		for j in S:
			for y in R(A[j]+1):a=max(a,V())
		print(a)
if __name__=="__main__":m()