aa


b


ba


bd


be


bf


bg


bh


bt


c


ca


cb


cc


cd


ce


cgf


ck


db


e


ec


f


fa


fc


fe


ff


g


gc


gf


gg


gj


gl


gm


go (2)


gp


gu


gv


hab


hf


i


ib


ic


ij


l


la


le


lf


m


mb


mc


md


me


na