by steps
000000 000000
000000
688760 688760
688760
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
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69875e
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007fff
00ff00 00ff00
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00ff7f
6b875c 6b875c
6b875c
00ffff 00ffff
00ffff
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7f007f
6c875a 6c875a
6c875a
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6e8858 6e8858
6e8858
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6f8856 6f8856
6f8856
ff0000 ff0000
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718854 718854
718854
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ff7f00
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ff7f7f
ff7fff ff7fff
ff7fff
728852 728852
728852
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
748951 748951
748951