ab1r
bb1rc
cb1rcg
db1r
eb1rc
z11rc
011rcg
111r
211rc
311rcg
os2rcg
ps2r
qs2rc
rs2rcg
ss2r
dj3r
ej3rc
fj3rcg
gj3r
hj3rc
293rc
393rcg
493r
593rc
693rcg