/usr/share/vim-scripts/sokoban-levels/level22.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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