by steps
000000 000000
000000
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987f82
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00007f
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0000ff
007f00 007f00
007f00
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007f7f
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978080
007fff 007fff
007fff
00ff00 00ff00
00ff00
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00ff7f
97817f 97817f
97817f
00ffff 00ffff
00ffff
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7f007f
97827e 97827e
97827e
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7f00ff
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7f7f00
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7f7f7f
97837d 97837d
97837d
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96847c
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ff7f7f
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ff7fff
96867a 96867a
96867a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
968879 968879
968879