. ... ... ... ... ...... ... --~~'俗俗俗俗俗俗'~~--,....._._.
... ... ... ... ... ...,,-~俗::::::::::::::::::::::::::::::::::俗'~,,
... ... ... ... ..,,~:::::::::::::............::::::::::::::::::::::::
... ... ... ..,,-::::::::...:::::::/::::...::/::::::::::::::::\:::......:::::
... ... ...,-:::::,-:::/:::::/::::::/:::::::::::::::::\::::::::::::::::\::::\:
... ... .,-:::::::/:::: :::: :::::: ::::::::::::::::::\\:::::::::::: :::::\:::\::\
... ... /::::::::: ::::: :::: \::::::\:\::::::::::::::::: |::::::::::: :/::::: ::: ::\
... .../::::::::::::\:::::::\::::'\-,::::\:\,:::::::::::::: ::::::::::,//::::::/:::::'|
... ../::::::::::::::'\::::::\-,:::-,-