21,8,13
#
in steps
000000 000000
000000
10060a 10060a
10060a
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
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11060a
007fff 007fff
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00ff00
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00ff7f
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12070b
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14070c 14070c
14070c
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15080d
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16090d
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18090e
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ff7fff ff7fff
ff7fff
190a0f 190a0f
190a0f
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
1b0b10 1b0b10
1b0b10