18,27,1
#
in steps
000000 000000
000000
00007f 00007f
00007f
0000ff 0000ff
0000ff
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007f00
007f7f 007f7f
007f7f
040600 040600
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00ff7f 00ff7f
00ff7f
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7f7f7f 7f7f7f
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162201 162201
162201
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1f3001 1f3001
1f3001
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
243702 243702
243702