Question 401525
It's hard to draw trees and branches here, so I'll just list the possibilities:
LL
LWL
LWWL
LWWWL
LWWWW
WLL
WLWL
WLWWL
WLWWW
WWLL
WWLWL
WWLWW
WWWLL
WWWLW
WWWWL
WWWWW