= 2.2.5. Allophonic alternations

^  ^ Finn. ^ Seto ^ Er. ^ HMr ^ MMr ^ Ud. ^ Hun. ^ SMn ^ SKh ^ VKh ^ Nga. ^ Ka. ^
^   F/B   | 0 | 0 | 0 | 0 | 1 | 0 | **0** | ? | 2 | 1 | 0 | 0 |
^ R%%|%%T | — | — | — | — | 1 | — | **1** | ? | — | — | 0 | 1 |

<fs smaller>
F/B: front/back harmony\\
R|T: rounding, total harmony\\
—: not applicable</fs>


  ; Meadow Mari 
  : **Rounding and F/B harmony:** As there is an [e] : [ø] : [o] alternation in word-final position, but instead of these a vowel [ə̆] is attested when it occurs in non-word-final position, it is reasonable to analyse all these surface forms as the allophones of /ə̆/. Moreover, while stress falls on the last full vowel of the word form, vowels participating in the [e] : [ø] : [o] : [ə̆] alternation are never stressed, irrespective of their quality. As a consequence, it is reasonable to analyse this kind of alternation as an allophonic alternation of the phoneme /ə̆/ (regulated by two kinds of harmonies: rounding and F/B).

  ; Southern Khanty
  : The vowels /i/ and /e/ have no B phonemic counterparts, but they alternate allophonically with [ɨ] and [ɘ], respectively. However, this alternation is optional, and back allophones can (and front allophones must) be followed by front vowels.

  ; Kamas rounding harmony
  : The reduced vowel in a non-initial syllable, which does not undergo F/B harmony (and which can be identified with first syllable /ĭ/ or /ɑ̆/, possibly both, see [[2.inventories:2.1.size|2.1.]]), undergoes total harmony after rounded vowels.