Ratios | 432 | 486 | 512 | 576 | 648 | 729 | 768 | 864 |
Rising | D | E | F | G | A | B | C | D |
Falling | D | C | B | A | G | F | E | D |
Powers of 3 | 33 | 35 | 30 | 32 | 34 | 36 | 31 | 33 |