1#@!#!123s

file_get_contents 1#@!#!123s

D7net

: / usr / share / netpbm /

Filename : palmgray4.map

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P2
# 16 level grayscale palette
4 4
15
 0  1  2  3
 4  5  6  7
 8  9 10 11
12 13 14 15