10 4
a
iiijjjffe.
iiijjjfe.a
iiijjje.ab
hhhffe.abb
hhhfe.aggg
hhhe.abggg
ffe.abbggg
fe.acccddd
e.abcccddd
.abbcccddd
c
abcdefghi.
abcdefgh.j
abcdefg.ij
abcdef.hij
abcde.ghij
abcd.fghij
abc.efghij
ab.defghij
a.cdefghij
.bcdefghij
r
jjjjjjjjj.
iiiiiiii.i
hhhhhhh.hh
gggggg.ggg
fffff.ffff
eeee.eeeee
ddd.dddddd
cc.ccccccc
b.bbbbbbbb
.aaaaaaaaa
a
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