nx1of
ox1ofn
px1o
qx1of
rx1ofn
co2ofn
do2o
eo2of
fo2ofn
go2o
1e3o
2e3of
3e3ofn
4e3o
5e3of
q53of
r53ofn
s53o
t53of
u53ofn
fw4ofn
gw4o
hw4of
iw4ofn
jw4o