by steps
000000 000000
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7be21a 7be21a
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00ffff 00ffff
00ffff
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78c635
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76b742 76b742
76b742
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
739b5c 739b5c
739b5c
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
728d6a 728d6a
728d6a