ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll ll O ;x O ll cccccccccxxcccccccc 0cccccccccccccccoOcccccccccccccccc0cccccccxxccccccccc ll O ll .........oo.......O............................ ...............oo......... :::::::::dd::::::::::::::::::::::::::::::::::::' .;::::::::::::::dd::::::::: ll ll cccccccccxl .Occccccccccccccccxxccccccccccccccccccccccccccccxl ll O ll ll ll O ll ll ll O ll ll ll O ll ll ll O ll ll ll O ll ll