The syllable structure appears to be
L stands for /l/, /r/, or /w/ (if /w/ is to be analyzed as a separate segment here). N stands for a nasal.
The nucleus consists of one vowel, which can be short or long. Complex nuclei have not been attested yet.
The nucleus may equally consist of a nasal.

Most words have an onset. Attested words without an onset are
The onset normally consists of one consonant. All nasals can occur in the onset (nga ‘tomorrow’, nyoswa ‘God’). Complex onsets do exist. The second consonant is /l/ or /r/ in these cases. Depending on analysis, pw, gw, and hw could be seen as a simple onset consisting of one complex segments or as a complex onset consisting of two segments.
Attested words with complex onsets are
srɛ ‘braids’
The nucleus can optionally be followed by a nasal or a glottal. The nature of the glottal needs further investigation. It is provisionally rendered as h.