. .......O....O....O............O....O....O
. ........O...O...O..............O...O...O
. .........O..O..O................O..O..O
. ....O.O.O.[J-17].O.O.O.....O.O.O.[J-17]O.O.O
. .........O..O..O................O..O..O
. ........O...O...O..............O...O...O
. .......O....O....O............O....O....O
..................................................
..................................................
. ......................./.\
. ....................../...\
. ...................../.....\
. ..................../.......\
. .................../.........\
. ................../...........\
. ................./(j-17).(j-17)\
. .................---------------
..................................................
..................................................
. ....(O..O..O..O..O..O..O..O..O..O..O..O..O)
. .......O.|_|.|_|.|_|.|_|.|_|.|_|.|_|.|_|.O
. .........O..............__.............O
. ...........O.........../..\..........O
. .............O.O.O.O.//j-17\\.O.O.O.O
. ...................../______\
..................................................
..................................................