------------------------------------------------------
----------------------------------------------------------------------------------------------------------
------------------------------------->
<------------------------------------------------------------------------------------------------------------------------------------------
I---------------------------------------------------------->
I---------------------------------------------
--------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------------I
I--------------------->7 eme manche
------------------------------------------------------->6 eme manche
5 eme manche <----------------------------------------------------------------------------------------------------------I
I------------------------------------------------------------------->4 eme manche
3 eme manche <---------------------------------------------------------------I
1ere manche------------------------------------------------------------------->2 eme manche