by steps
000000 000000
000000
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7fff00
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00007f
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0000ff
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007f7f 007f7f
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77f10d
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007fff
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00ff7f
70e41b 70e41b
70e41b
00ffff 00ffff
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7f007f
69d728 69d728
69d728
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7f7f7f
62ca36 62ca36
62ca36
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5bbc43
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54af51
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ff7fff ff7fff
ff7fff
4da25e 4da25e
4da25e
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
46956c 46956c
46956c