by steps
000000 000000
000000
717131 717131
717131
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
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71752f
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007fff
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00ff7f
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71792d
00ffff 00ffff
00ffff
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7f007f
727e2c 727e2c
727e2c
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7f7f7f
72822a 72822a
72822a
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7f7fff
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7fffff
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728628
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738b27 738b27
738b27
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ff7f7f
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ff7fff
738f25 738f25
738f25
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
749424 749424
749424