by steps
000000 000000
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00007f
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0000ff
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83ea06
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007fff
00ff00 00ff00
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00ff7f
87d50c 87d50c
87d50c
00ffff 00ffff
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8bc112
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7fff7f
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93971e 93971e
93971e
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978324 978324
978324
ff7f00 ff7f00
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ff7f7f
ff7fff ff7fff
ff7fff
9b6e2a 9b6e2a
9b6e2a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
a05a30 a05a30
a05a30