by steps
000000 000000
000000
639ae3 639ae3
639ae3
00007f 00007f
00007f
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0000ff
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007f00
007f7f 007f7f
007f7f
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6597e5
007fff 007fff
007fff
00ff00 00ff00
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00ff7f 00ff7f
00ff7f
6795e7 6795e7
6795e7
00ffff 00ffff
00ffff
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7f007f
6993e9 6993e9
6993e9
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7fffff
6e8fee 6e8fee
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708df0 708df0
708df0
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ff7f00
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ff7f7f
ff7fff ff7fff
ff7fff
728bf2 728bf2
728bf2
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
7589f5 7589f5
7589f5