by steps
000000 000000
000000
91899a 91899a
91899a
00007f 00007f
00007f
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0000ff
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007f00
007f7f 007f7f
007f7f
91899b 91899b
91899b
007fff 007fff
007fff
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00ff7f
928a9c 928a9c
928a9c
00ffff 00ffff
00ffff
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938a9d 938a9d
938a9d
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948b9e
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958b9f
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968ca0 968ca0
968ca0
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
978ca1 978ca1
978ca1
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
988da3 988da3
988da3