12 6
r
aaaaaa...bbb
.........ddd
bbbbbb...fff
.........aaa
cccccc...ccc
.........eee
dddddd......
............
eeeeee......
............
ffffff......
............
s
.........ggg
gggggg...iii
.........kkk
hhhhhh...lll
.........hhh
iiiiii...jjj
............
jjjjjj......
............
kkkkkk......
............
llllll......
c
a.c.e....ace
.b.d.f...ace
.b.d.f...ace
a.c.e....fbd
a.c.e....fbd
.b.d.f...fbd
.b.d.f......
a.c.e.......
a.c.e.......
.b.d.f......
.b.d.f......
a.c.e.......
d
.h.j.l...hjl
g.i.k....hjl
g.i.k....hjl
.h.j.l...gik
.h.j.l...gik
g.i.k....gik
g.i.k.......
.h.j.l......
.h.j.l......
g.i.k.......
g.i.k.......
.h.j.l......
a
aabbcc...abc
aabbcc...def
aabbcc...ghi
aabbcc......
ddeeff......
ddeeff......
ddeeff......
ddeeff......
gghhii......
gghhii......
gghhii......
gghhii......
b
............
............
.nnoo.......
.nnoo.......
.nnoo.....no
.nnoo.....qr
.qqrr.......
.qqrr.......
.qqrr.......
.qqrr.......
............
............