Treemalkng Tunnels
A
|
x
|
x
/
x
/
x x
| /
x T x-4-x
\ |/ \
x x x
\| |
3 x x
| |/
x 5
| /
x | x
\ | /
x-x-x 2 6-x-x-x
\ |/
x x
\|
1
|
L
|
x
|(U/D)
x
|
x-x-x-x-x
|
x
|
x
|
x(U/D)