aSVN
aSWN
aSXN
aTON
aTPN
aTQN
aTRN
aTSN
aTTN
aTUN
aTVN
aTWN
aTXN
aUON
aUPN
aUQN
aURN
OPN
OQN
ORN
OSN
OTN
OUN
OVN
OWN
OXN
PON
PPN
PQN
PRN
PSN
PTN
PUN
PVN
PWN