½¬RONx
SET
@@@
½¬QXNx
S@
T@
U@
V@
W@
X@
PO
PP
PQ
P@
Q@
R@
½¬QWNx
½¬QVNx
½¬QUNx
½¬QTNx
½¬QSNx
½¬QRNx