Waimoa has aspirated/voiceless and glottalized/ejective consonants, which are distributed like /hC/ and /ʔC/ consonant clusters (or perhaps /Ch/ and /Cʔ/) but are often pronounced as single segments.2
Similarly there are voiceless and glottalized /m n l r s w/.
There is also vowel harmony.
Waimoa at Ethnologue (25th ed., 2022) https://www.ethnologue.com/25/language/wmh ↩
Kirsten Culhane (2021) Waimaʼa consonants: phonology and typological position in Greater Timor. 15th International Conference on Austronesian Linguistics. ↩