Khoekhoe language
Grammatical particles have the form CV or CN, with any vowel or tone, where C may be any consonant but a click, and the next letter cannot be NN. Suffixes and a third mora of a root, may have the form CV, CN, V, N, with any vowel or tone; there are also three C-only suffixes, -p 1m.sg, -ts 2m.sg, -s 2/3f.sg.