Inserting 9 8 7 6 5 4 3 2 1 0 
Move iterator at the beginning ... ok.
Move iterator to next position ... ok.
Move iterator to next position ... ok.
Move iterator to next position ... ok.
Move iterator to next position ... ok.
Move iterator to next position ... ok.
Move iterator to next position ... ok.
Move iterator to next position ... ok.
Move iterator to next position ... ok.
Move iterator to next position ... ok.
*iter = 9
Move iterator to the prev position ... ok.
*iter = 8
Move iterator to the prev position ... ok.
*iter = 7
Move iterator to the prev position ... ok.
*iter = 6
Move iterator to the prev position ... ok.
*iter = 5
Move iterator to the prev position ... ok.
*iter = 4
Move iterator to the prev position ... ok.
*iter = 3
Move iterator to the prev position ... ok.
*iter = 2
Move iterator to the prev position ... ok.
*iter = 1
Move iterator to the prev position ... ok.
*iter = 0
Move iterator to the prev position ... ok.
Is iterator at the end ? Y