Answer:
It is necesary be carefull with the list inside the other list
---> + -------> + -----------------------> +
| | |
A + ----------> + + --------> +
| | | |
B + E F
|
C
Explanation:
step 1: first draw the first element of the list A
---> +
|
A
step 2: next draw the second element keep in mind that is another list and it is not in the same level of list A
---> + -------> +
| |
A +
|
B
step 3: next draw the third list that is inside the second list
---> + -------> +
| |
A + ----------> +
| |
B +
|
C
step 4: draw the last list , it is in the same level of the B list
---> + -------> + -----------------------> +
| | |
A + ----------> + + --------> +
| | | |
B + E F
|
C
