User:ɶLerman/Old East Slavic

The dissimilation rule

${\ce {({\underset {-}{L}}\ldots {\underset {+}{L}}{V^{[}+stress]}{\underset {\pm }{L}}\ldots {\underset {-}{L}})}}$

In any syllable that is stressed, the liquid consonant is preserved:

про́рубь (literary)
коридо́р (literary)
револьве́р (literary)
пропо́рция (literary)
секрета́рь (literary)
верблю́д (literary)
Селиге́р (literary)
февра́ль (literary)
флю́гер (literary)

In any syllable that is not stressed, the liquid consonant is changed:

про́рубь (literary) > про́лубь (dialectal)
French corridor > коридо́р (literary) > колидо́р (dialectal)
English revolver > револьве́р (literary) > левольве́р (dialectal)
Latin prōportiō > пропо́рция (literary) > плепо́рция (dialectal)
Polish sekretarz > секрета́рь (literary) > секлета́рь (dialectal)
Finnish Särkijärvi > Сериге́р (dialectal) > Селиге́р (literary)
велблю́д (dialectal) > верблю́д (literary)
Dutch vleugel > флю́гел (dialectal) > флю́гер (literary)

If the syllable is closed, stressed and has two liquid consonants, the first liquid consonant is preserved, and the second liquid consonant is changed:

Byzantine Greek Φεβρουάριος (Phebrouários) > февра́рь (dialectal) > февра́ль (literary)

Homogeneity

OES	Ukrainian Rusyn	Belarusian Russian	Northern Russian	Mixed (Just Measure)
/ɔː/	/i/ ~ /y/ ~ /u/	/o/	/o/	/uo̯/
/ɔ/	/o/		/o/	/o/
/oː/	/o/		/uo̯/	/uo̯/

Heterogeneity

V	Belarusian Russian	Ukrainian Rusyn	Northern Russian	Mixed (Just Measure)	Krivich (Pskov-Polotsk)	AP
*ъ	IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsɔn/ сон	IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsɔn/ сон	IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsɔn/ сон	IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsɔn/ сон	IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsʊnʊ/ IPA^(key): /ˈsoːn/ сѡн	b/с or nonclassical d
*ъ	IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrɔt/ рот	IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrɔt/ рот	IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrɔt/ рот	IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrɔt/ рот	IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrʊtʊ/ IPA^(key): /ˈrɔt/ рот	b
*ъ	IPA^(key): /ˈkrʊʋɪ/ IPA^(key): /ˈkrʊʋʲɪ/ IPA^(key): /ˈkrɔʋʲ/ кроў	IPA^(key): /ˈkrʊʋɪ/ IPA^(key): /ˈkrʊʋʲɪ/ IPA^(key): /ˈkrɔʋʲ/ кров	IPA^(key): /ˈkrʊʋɪ/ IPA^(key): /ˈkrʊʋʲɪ/ IPA^(key): /ˈkrɔʋʲ/ кровь	IPA^(key): /ˈkrʊʋɪ/ IPA^(key): /ˈkrʊʋʲɪ/ IPA^(key): /ˈkrɔʋʲ/ кровь	IPA^(key): /ˈkrʊʋɪ/ IPA^(key): /ˈkrʊʋʲɪ/ IPA^(key): /ˈkrɔʋʲ/ кроў	c
*o	IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdɔm/ дом	IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdoːm/ дім	IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdɔm/ дом	IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdoːm/ дѡм	IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdɔmʊ/ IPA^(key): /ˈdɔm/ дом	c
*o	IPA^(key): /ˈkɔnʲɪ/ IPA^(key): /ˈkɔnʲɪ/ IPA^(key): /ˈkɔnʲ/ конь	IPA^(key): /ˈkɔnʲɪ/ IPA^(key): /ˈkɔnʲɪ/ IPA^(key): /ˈkoːnʲ/ кінь	IPA^(key): /ˈkoːnʲɪ/ IPA^(key): /ˈkoːnʲɪ/ IPA^(key): /ˈkoːnʲ/ кѡнь	IPA^(key): /ˈkoːnʲɪ/ IPA^(key): /ˈkoːnʲɪ/ IPA^(key): /ˈkoːnʲ/ кѡнь	IPA^(key): /ˈkɔnʲɪ/ IPA^(key): /ˈkɔnʲɪ/ IPA^(key): /ˈkɔnʲ/ конь	b
*o	IPA^(key): /ˈʋɔlʲɑ/ IPA^(key): /ˈʋɔlʲa/ IPA^(key): /ˈʋɔlʲa/ во́ля	IPA^(key): /ˈʋɔlʲɑ/ IPA^(key): /ˈʋɔlʲa/ IPA^(key): /ˈʋɔlʲa/ во́ля	IPA^(key): /ˈʋoːlʲɑ/ IPA^(key): /ˈʋoːlʲa/ IPA^(key): /ˈʋoːlʲa/ вѡ́ля	IPA^(key): /ˈʋoːlʲɑ/ — IPA^(key): /ʋɔˈlʲɑ/ IPA^(key): /ˈʋoːlʲa/ — IPA^(key): /ʋɔˈlʲa/ IPA^(key): /ˈʋoːlʲa/ — IPA^(key): /ʋɔˈlʲa/ вѡ́ля — воля́	IPA^(key): /ˈʋɔlʲɑ/ IPA^(key): /ˈʋɔlʲa/ IPA^(key): /ˈʋɔlʲa/ во́ля	b or nonclassical f