by steps
000000 000000
000000
72870d 72870d
72870d
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00007f
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0000ff
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007f00
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007f7f
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668e19
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007fff
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00ff7f
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5b9525
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7f007f
509c31 509c31
509c31
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45a33d 45a33d
45a33d
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7f7fff
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7fffff
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3aaa49
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2fb155
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ff7f00
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ff7f7f
ff7fff ff7fff
ff7fff
24b861 24b861
24b861
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
19c06d 19c06d
19c06d