by steps
000000 000000
000000
536358 536358
536358
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
596a5e 596a5e
596a5e
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007fff
00ff00 00ff00
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00ff7f 00ff7f
00ff7f
5f7265 5f7265
5f7265
00ffff 00ffff
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7f007f
66796c 66796c
66796c
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6c8173
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728879 728879
728879
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ff7fff
7f9787 7f9787
7f9787
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
869f8e 869f8e
869f8e