by steps
000000 000000
000000
a2925b a2925b
a2925b
00007f 00007f
00007f
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0000ff
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007f7f 007f7f
007f7f
a09162 a09162
a09162
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007fff
00ff00 00ff00
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00ff7f
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9e906a
00ffff 00ffff
00ffff
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9c8f71
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9b8e79
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7fffff
998d81 998d81
998d81
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978c88 978c88
978c88
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
958b90 958b90
958b90
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
948a98 948a98
948a98