15,19,125
#
in steps
000000 000000
000000
1f267c 1f267c
1f267c
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
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1b217c 1b217c
1b217c
007fff 007fff
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00ff7f 00ff7f
00ff7f
171c7c 171c7c
171c7c
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
13177d 13177d
13177d
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7fffff 7fffff
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0b0e7d 0b0e7d
0b0e7d
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07097e 07097e
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ff7fff ff7fff
ff7fff
03047e 03047e
03047e
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff