15,87,87
#
in steps
000000 000000
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007f7f 007f7f
007f7f
00007f 00007f
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0000ff
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007f00
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00ff7f
076b6b 076b6b
076b6b
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7f007f
0b6161 0b6161
0b6161
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134d4d 134d4d
134d4d
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1b3939 1b3939
1b3939
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ffff7f ffff7f
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ffffff ffffff
ffffff
1f2f2f 1f2f2f
1f2f2f