72nt
82ntr
92ntrn
a3nt
b3ntr
wtotr
xtotrn
ytot
ztotr
0totrn
lkptrn
mkpt
nkptr
okptrn
pkpt
abqt
bbqtr
cbqtrn
dbqt
ebqtr
z1qtr
01qtrn
11qt
21qtr
31qtrn