env6;
f;
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0 . x . 6 # . A . # 7 . x . 3
. x x x . x x x x x . x x x .
x x x x x # x x x # x x x x x
x x x # # # x x x # # # x x x
# # x x . x R R U x . x x # #
B . x . 4 x U L D x 5 . x . B
# # x x . x R U L x . x x # #
x x x # # # x x x # # # x x x
x x x x x # x x x # x x x x x
. x x x . x x x x x . x x x .
2 . x . 9 # . A . # 8 . x . 1