/usr/share/vim-scripts/sokoban-levels/level42.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.
1 2 3 4 5 6 7 8 9 10 11 12 13 | ########
#### ######
# ## $ $ @#
# ## ##$#$ $ $##
### ......# $$ ##
# ......# # #
# # ......#$ $ #
# #$...... $$# $ #
# ### ###$ $ ##
### $ $ $ $ #
# $ $ $ $ #
###### ######
#####
|