problem-47

class Node:
    def __init__(self, data=None, prev=None, next=None):#None node
        self.data, self.prev, self.next = data, prev, next

    def __repr__(self):
        return repr(self.data)

class Sorted:
    def __init__(self):
        self.head = Node()

    def Result(self):
        nodes = []
        current_node = self.head.next

        while current_node:
            nodes.append(current_node.data)
            current_node = current_node.next
        return nodes


    def prepend(self, item):
        node = Node(item, None, self.head.next)
        self.head.next = node

    def insert(self, item):
        node = Node(item)
        previous_node = self.head
        current_node = previous_node.next

        if previous_node.next == None:#if, previous_node.next is None then item is first node
            self.head.next = node

            return

        if current_node.data >= item:#if, the first node is greater than of item.
            current_node.prev = node
            previous_node.next = node
            node.prev = previous_node
            node.next = current_node

            return

        while current_node.next:
            previous_node = current_node
            current_node = current_node.next
            if current_node.data >= item:
                current_node.prev = node
                previous_node.next = node
                node.prev = previous_node
                node.next = current_node

                return

        current_node.next = node
        node.prev = current_node


if __name__ == '__main__':
    t = int(input())
    for _ in range(t):
        o = Sorted()
        n1 = int(input())
        li1 = [int(input()) for _ in range(n1)]
        for item in li1[::-1]:
            o.prepend(item)
        n2 = int(input())
        li2 = [int(input()) for _ in range(n2)]
        for item in li2:
            o.insert(item)
        Sorted_list = o.Result()
        length = len(Sorted_list)
        for i in range(length):
            if i != length-1:
                print(Sorted_list[i], end=' ')
            else:
                print(Sorted_list[i])