by steps
000000 000000
000000
95947b 95947b
95947b
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00007f
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0000ff
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007f7f 007f7f
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95907a
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007fff
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00ff7f 00ff7f
00ff7f
968d7a 968d7a
968d7a
00ffff 00ffff
00ffff
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968a7a 968a7a
968a7a
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7f7f7f
97877a 97877a
97877a
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98837a 98837a
98837a
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98807a 98807a
98807a
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
997d7a 997d7a
997d7a
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
9a7a7a 9a7a7a
9a7a7a