by steps
000000 000000
000000
6d888d 6d888d
6d888d
00007f 00007f
00007f
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0000ff
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007f00
007f7f 007f7f
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6d888c 6d888c
6d888c
007fff 007fff
007fff
00ff00 00ff00
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00ff7f
6e898b 6e898b
6e898b
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
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6f898a 6f898a
6f898a
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7f7f7f
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708a89
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708b88 708b88
708b88
ff0000 ff0000
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718b87 718b87
718b87
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
728c86 728c86
728c86
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
738d86 738d86
738d86