by steps
000000 000000
000000
728893 728893
728893
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00007f
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0000ff
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007f7f
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8386a0
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007fff
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00ff7f
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9585ae
00ffff 00ffff
00ffff
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7f007f
a684bb a684bb
a684bb
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b883c9
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7fffff
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ca82d6
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db81e4
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ff7f7f
ff7fff ff7fff
ff7fff
ed80f1 ed80f1
ed80f1
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff