28 24 4 600
tunnels
12 12 10 17
4 13 14 19
16 12 21 13
13 1 3 21
FEWBBFBBBBBBBBFBAFFBBFBBBXBY
ZFXFBFBFFBFBB]FBBBBBFBBFFBBF
AAFFBFBBFBBFFFFBFFBBBBFFBBF^
BABFBBBFFFBFBBFBBFFFFFFBBFGA
BCBBFBBFBFBBBBFBXFBBBBBBFA`C
ABABAFXFBFFBFBFFFFBFFFBFBBBA
BABBBBFBBBBBBBFBBBBBBBFGBAGE
ABBAABBFBFBBFBFBFFFFBFWBABBA
BBABBBAAFFFFBBFBBBBBFGBHHHHH
BACAAABCBFBBFBFFFBBFGDDGDGDA
BABABBABABFBBBBBBBFGDGDGG`GB
ABBABABBBABFFFBFFFGGDGDMKNDD
BBABCBABABAF]FBF]FBAGBDPLPGG
ABCB]BABBABFAFBFAFDDGGG`GGDG
BABAABBABAAFAFBFAFGFGDGDGDAB
AABABABBBBBFAFBFAFGGFABBAGBD
ABABBBABABBFAFBFAFDGGFDGDGGG
EBBBABCBBAGFAFBFAFGDGDG```DB
FFFFFFFFFFFFAFBFAFFFFFFFFFFX
AFBFBBABBFBBBB_BBBFBFBFBFBFB
DDGGGIKJGGDGGGFGGDGDGDGGDGGD
GF`GRVVVSGBBGGDGGBGFGDGFG`FG
GFGDWLPLXBYFGYBGFGGDRVSDGDFD
DGD\WQQQXDFFWFFXFBDBTQUGDGGG
