9L 3s

↖8L 2s	↑9L 2s	10L 2s↗
←8L 3s	9L 3s	10L 3s→
↙8L 4s	↓9L 4s	10L 4s↘

Brightest mode	LLLsLLLsLLLs
Period	1\3
Range for bright generator	1\12 (100¢) to 1\9 (133.3¢)
Range for dark generator	2\9 (266.7¢) to 3\12 (300¢)
Parent MOS	3L 6s
Sister MOS	3L 9s
Daughter MOSes	12L 9s, 9L 12s
Equal tunings
Supersoft (L:s = 4:3)	4\45 (106.7¢)
Soft (L:s = 3:2)	3\33 (109.1¢)
Semisoft (L:s = 5:3)	5\54 (111.1¢)
Basic (L:s = 2:1)	2\21 (114.3¢)
Semihard (L:s = 5:2)	5\51 (117.6¢)
Hard (L:s = 3:1)	3\30 (120¢)
Superhard (L:s = 4:1)	4\39 (123.1¢)

This MOS is always proper because its period runs LLLs. It is generated by a diatonic semitone or "trienthird"/2/3-tone of 1/12edo (100 cents) to 1/9edo (133.33). It represents, among other chromatic scales, that of the August temperament.

1/12		100
5/57		105.263
4/45		106.667
	7/78	107.5385
	10/111	108.108
3/33		109.111
		109.992
	8/87	110.345
		110.557
	5/54	111.111
		111.815
	7/75	112
	9/96	112.5
	11/117	112.8205
	13/138	113.0435
2/21		114.286
	11/114	115.7895
	9/93	116.129
	7/72	116.667
	5/51	117.647
		118.274
	8/81	118.5185
		118.769
	11/111	118.919
	14/141	119.149
3/30		120
		120.543
	7/69	121.739
	11/108	122.222
4/39		123.138
	9/87	124.138
5/48		125
1/9		133.333