/usr/share/vim-scripts/sokoban-levels/level76.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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