Featural affixation and sound symbolism in Fungwa

Fungwa marks the diminutive by fronting non-high vowels of nominal roots and augmentative backing roots. The root-vowel mutation is considered to be an effect morphemes which have [?back] [+back] features as their phonetic exponents. form–meaning association consistent with pattern sound-size symbolism in various languages. Thus presents categorical deterministic evidence for symbolism. To account realisation featural affixes, I assume correspondence constraints. Given that affixes are not realised on high vowels, argue involves a prominence-based licensing condition.