2. The OCS phonological system

2.1. Segments: overview

Table 3: The OCS consonants.
labial dental palatal velar
stops p b t d ([c ɟ]) k g
affricates c ʒ č
fricatives s z š ž x
nasals m n [ɲ]
liquids l r [ʎ]
glides v j

The Glagolitic letters Ⱋ Ⰼ, rendered by шт жд in Cyrillic, may have denoted palatal stops [c ɟ] (from CS *‍tʲ dʲ), later developing into št žd 3.4.7, (cf. Andersen & Olander forthcoming).

Table 4: The OCS vowels.
front
 
back
spread

rounded
tense i y u
ě a
lax ĭ ŭ
e o
nasal ę ǫ

2.2. Syllabic liquids

The OCS sequences , , and need some context to be understood correctly (Lunt 2001: 38–39).

Common Slavic *‍ĭr ŭr and ĭl ŭl become /r̥ʲ r̥ l̥ʲ l̥/ in OCS. In the Kiev Leaves they are written rĭ rŭ and lĭ lŭ, but in the remaining manuscripts they are mostly written rŭ lŭ, as a result of a depalatalisation of the syllabic liquids.

But the actual sequences /rĭ rŭ/ and /lĭ lŭ/ (from CS *‍rĭ rŭ and *‍lĭ lŭ) are also written /rĭ rŭ/ and /lĭ lŭ/.

While the normal representation of both types is identical in the manuscripts, the former type never shows vocalisation of ĭ ŭ in apparently strong position (see 3.4.12), whereas the latter type sometimes does,

East Slavic also shows the original order of reduced vowel and liquid.

2.3. Syllable structure

The possible onsets and nuclei are as follows (from Andersen & Olander forthcoming):

Only some of the combinations are possible, but all attested combinations conform to the scheme.

There are no syllable codas in OCS, i.e. all syllables are open, except (a) in a few words ending in ‑gda: jegda ‘when(conj)’, ko/ŭgda ‘when(int)’, togda ‘then’, vĭsegda ‘always’; (b) in words with initial al‑: alkati ‘be hungry’ (alongside less frequent lakati) and derivatives, al(ŭ)dii ‘boat’ (alongside more frequent ladii) and a few more (Vaillant 1964: 72).