by steps
000000 000000
000000
778863 778863
778863
00007f 00007f
00007f
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0000ff
007f00 007f00
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007f7f 007f7f
007f7f
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748a63
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007fff
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00ff7f
728c64 728c64
728c64
00ffff 00ffff
00ffff
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7f007f
708e64 708e64
708e64
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6e9065 6e9065
6e9065
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6c9265 6c9265
6c9265
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6a9466
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ff7f7f
ff7fff ff7fff
ff7fff
689666 689666
689666
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
669967 669967
669967