please help with this question

Hi all, Happy new year first of all, to all of you.

i am wondering about what would be the answer of the following:

Is there a heap 'X', sorting 'n' distinct elements (n = 7 for
instance) such that :

- a preorder traversal of 'X' yields the elements of 'X' in sorted
order?
- how about an inorder traversal?
- how about a postorder traversal?

Thanks in advance for any help.
.