vAll of these appear to derive from an original affix, either ZYV- or -SV where ZY is a palatal affricate and S is an unspecified fricative and the V is either –a/ə or copies the stem. vThe suffix -SV can either follow the stem, or replace the final –CV syllable. vThe most unpredictable element is the vowel of the affix unless the stem vowel is  -a- vThese pluralising elements occur in other areas of the lexicon, notably ideophones