Given two numbers represented by two linked lists of size N and M. The task is to return a sum list. The sum list which is a linked list representation of addition of two input numbers.

Input:
First line of input contains number of testcases T. For each testcase, first line of input contains length of first linked list and next line contains N elements of the linked list. Again, next line contains M, and following line contains M elements of the linked list.

Output:
Output the resultant linked list.

User Task:
The task is to complete the function addTwoLists() which has node reference of both the linked lists and returns the head of new list.

Constraints:
1 <= T <= 100
1 <= N, M <= 100

Example:
Input:
2
2
4 5
3
3 4 5
2
6 3
1
7

Output:
0 9 3 
0 7

Explaination:
5->4 // linked list repsentation of 45.
5->4->3 // linked list representation of 345.
0->9 ->3 // linked list representation of 390 resultant linked list.
 

** For More Input/Output Examples Use 'Expected Output' option **