Enqueue  0
Enqueue  1
Enqueue  2
Enqueue  3
Enqueue  4
Value read     0
Value read     1
Enqueue  5
Value read     2
Value read     3
Value read     4
Enqueue  6
Value read     5
Value read     6
Enqueue  7
Value read     7
Enqueue  8
Value read     8
Enqueue  9
Value read     9
Enqueue 10
Value read    10
Enqueue 11