une vage : ~ + un accent circonflèxe : ^ + un v : v
___________________
|~^v^v~^v^~^v^~^v^~^|
|^v^^v^~^v^v~^v^~^v^|
|~^v^~^v^v~^v^~^v^~^|
|v^~^v^v~^v^~^v^~^v^|
|~^v^~^v^~^v^v~^v^~^|
|v^~^v^~^v^v~^v^~^v^|
____________________|
v^~^v^~^v^~^v^v~^v^~^v^~^v^~^