#  ocean as o 
#  upper lake as ul 
#  water fall as wf 
#  bottle-kneck as bk 
#  rain clouds as rc 
#  mountain top as mt 
#  constrainer 1 as c1 
#  constrainer 2 as c2

o = {}
wf = [] # wf may represent a loop 

def bk(w):
# w entered == water input 
     w - 1
    return w

ul = {} 
