l :: abspin
l .,,. l .,,. l ::
lS@**@SS l SS@**@Sl
:: Yb:: dP ::
l l l
l l l
:: :P ::Y: ::
l lP l Yl l
l *SP l YS* l
l l l l
:: l l .,,. l : lS@**@SS l : .,,.
:: Yb:: dl ,b dS@**@SS
l l d b P b
l l d: b b
:: :P ::l l
l lP l Y:Y:
l *SP lYSSP Yl
:: S* :: *SS* YS* l l *S :: ::