Table of Interval Class Equivalencies
| ic | included intervals | tonal counterparts |
|---|---|---|
| 0 | 0 | unison and octave |
| 1 | 1 and 11 | minor 2nd and major 7th |
| 2 | 2 and 10 | major 2nd and minor 7th |
| 3 | 3 and 9 | minor 3rd and major 6th |
| 4 | 4 and 8 | major 3rd and minor 6th |
| 5 | 5 and 7 | perfect 4th and perfect 5th |
| 6 | 6 | augmented 4th and diminished 5th |
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