4sqr
3sqrst
2sqrs
1sqr
0sqrst
f2prst
e2prs
d2pr
c2prst
b2prs
qbprs
pbpr
obprst
nbprs
mbpr
1kor
0korst
zkors
ykor
xkorst
cunrst
bunrs
aunr
9tnrst
8tnrs