jlis.py

import sys
rl = lambda: raw_input()#sys.stdin.readline()
problems = int(rl())

def recur(check_a,check_b, length):

  # print check_a, check_b, length

	global A,B
	if len(check_a) + len(check_b) == 0 : 
		return length


	ret = []

	for i in xrange(len(check_a)):
		target = A[check_a[i]]

		ca=[]
		cb=[]
		for k in xrange(i+1,len(check_a)):
			if target < A[check_a[k]]:
				ca.append(check_a[k])
	
		for j in check_b:
			if target < B[j]:
				cb.append(j)

		ret.append(recur(ca,cb,length+1))

	for i in xrange(len(check_b)):
		target = B[check_b[i]]

		ca=[]
		cb=[]
		for k in xrange(i+1,len(check_b)):
			if target < B[check_b[k]]:
				cb.append(check_b[k])
	
		for j in check_a:
			if target < A[j]:
				ca.append(j)

		ret.append(recur(ca,cb,length+1))

	return max(ret)

for p in xrange(problems):
	len_a, len_b = [int(x) for x in rl().strip().split()]
	A = [int(x) for x in rl().strip().split()]
	B = [int(x) for x in rl().strip().split()]

	print recur(range(len(A)), range(len(B)),0)

	# print A,B