by steps
000000 000000
000000
e3231a e3231a
e3231a
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
e0241c e0241c
e0241c
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
de251e de251e
de251e
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f
dc2621 dc2621
dc2621
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da2723 da2723
da2723
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7f7fff
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7fff7f 7fff7f
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7fffff
d72825 d72825
d72825
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d52928
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ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
d32a2a d32a2a
d32a2a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
d12b2d d12b2d
d12b2d