P 0 v

P 0 vP 0 vP 0 vP 0 vP 0 vP 0 v
P 0 vP 0 vP 0 vP 0 vP 0 vP 0 v
P 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 vP 0 v