by steps
000000 000000
000000
9a8235 9a8235
9a8235
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
978130 978130
978130
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
95812c 95812c
95812c
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
938128 938128
938128
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8d801b 8d801b
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ff7f00 ff7f00
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ff7f7f
ff7fff ff7fff
ff7fff
8b8017 8b8017
8b8017
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
898013 898013
898013