20,17,188
#
in steps
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000000
1711bd 1711bd
1711bd
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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1611bc 1611bc
1611bc
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00ff7f
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1511bc
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7f7f7f 7f7f7f
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1411bc 1411bc
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1311bc 1311bc
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1211bc 1211bc
1211bc
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ffff7f
ffffff ffffff
ffffff
1212bc 1212bc
1212bc