by steps
000000 000000
000000
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0000ff
00007f 00007f
00007f
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007f7f 007f7f
007f7f
0001e0 0001e0
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007fff
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00ff7f 00ff7f
00ff7f
0102c1 0102c1
0102c1
00ffff 00ffff
00ffff
7f0000 7f0000
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0203a3 0203a3
0203a3
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7f00ff
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7f7f7f
030484 030484
030484
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7fffff 7fffff
7fffff
030565 030565
030565
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040647
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ff7f7f
ff7fff ff7fff
ff7fff
050728 050728
050728
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
06080a 06080a
06080a