/usr/share/vim-scripts/sokoban-levels/level5.sok is in vim-scripts 20130814ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# #####
# #$## #
# $ #
######### ### #
#.... ## $ $###
#.... $ $$ ##
#.... ##$ $ @#
######### $ ##
# $ $ #
### ## #
# #
######
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