by steps
000000 000000
000000
739de6 739de6
739de6
00007f 00007f
00007f
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0000ff
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007f00
007f7f 007f7f
007f7f
729be5 729be5
729be5
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007fff
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00ff7f 00ff7f
00ff7f
7299e5 7299e5
7299e5
00ffff 00ffff
00ffff
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7297e4 7297e4
7297e4
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7294e4 7294e4
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7292e3 7292e3
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ff7f00
ff7f7f ff7f7f
ff7f7f
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ff7fff
7290e3 7290e3
7290e3
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
728fe3 728fe3
728fe3