from re import *

regles = { "o": "ooo",
                "!": "!"
                }
                
ruban = "o"*7+"!"

while ruban[0] != "!":
        print ruban
        ruban += regles[ruban[0]]
        ruban = ruban[1:]

print ruban
ruban = sub("!","",ruban)        
print len(ruban)