Sender               Receiver
    |-----W=0, FCN=27----->| 4 tiles sent
    |-----W=0, FCN=23----->| 4 tiles sent
    |-----W=0, FCN=19----->| 4 tiles sent
    |-----W=0, FCN=15--X-->| 4 tiles sent (not received)
    |-----W=0, FCN=11----->| 4 tiles sent
    |-----W=0, FCN=7 ----->| 4 tiles sent
    |-----W=0, FCN=3 ----->| 4 tiles sent
    |-----W=1, FCN=27----->| 4 tiles sent
    |-----W=1, FCN=23----->| 4 tiles sent
    |-----W=1, FCN=19----->| 4 tiles sent
    |-----W=1, FCN=15----->| 4 tiles sent
    |-----W=1, FCN=11----->| 4 tiles sent
    |-----W=1, FCN=7 ----->| 4 tiles sent
    |-----W=1, FCN=3 --X-->| 4 tiles sent (not received)
    |-----W=2, FCN=27----->| 4 tiles sent
    |-----W=2, FCN=23----->| 4 tiles sent
^   |-----W=2, FCN=19----->| 1 tile sent
|   |-----W=2, FCN=18----->| 1 tile sent
|   |-----W=2, FCN=17----->| 1 tile sent
    |-----W=2, FCN=16----->| 1 tile sent
s   |-----W=2, FCN=15----->| 1 tile sent
m   |-----W=2, FCN=14----->| 1 tile sent
a   |-----W=2, FCN=13--X-->| 1 tile sent (not received)
l   |-----W=2, FCN=12----->| 1 tile sent
l   |---W=2, FCN=31 + RCS->| Integrity check: failure
e   |<--- ACK, W=0, C=0 ---| C=0, Bitmap:1111111111110000111111111111
r   |-----W=0, FCN=15----->| 1 tile sent
    |-----W=0, FCN=14----->| 1 tile sent
L   |-----W=0, FCN=13----->| 1 tile sent
2   |-----W=0, FCN=12----->| 1 tile sent
    |<--- ACK, W=1, C=0 ---| C=0, Bitmap:1111111111111111111111110000
M   |-----W=1, FCN=3 ----->| 1 tile sent
T   |-----W=1, FCN=2 ----->| 1 tile sent
U   |-----W=1, FCN=1 ----->| 1 tile sent
    |-----W=1, FCN=0 ----->| 1 tile sent
|   |<--- ACK, W=2, C=0 ---| C=0, Bitmap:1111111111111101000000000001
|   |-----W=2, FCN=13----->| Integrity check: success
V   |<--- ACK, W=2, C=1 ---| C=1
  (End)