Western Siouan languages
The Western Siouan languages, also called Siouan proper or simply Siouan, are a large language family native to North America. They are closely related to the Catawban languages, sometimes called Eastern Siouan, and together with them constitute the Siouan (Siouan–Catawban) language family.
Sika language
The Sika or Sikanese language is a member of the Central Malayo-Polynesian branch of the Austronesian language family, and is spoken by around 180,000 people of the Sika ethnic group on Flores island in East Nusa Tenggara province, Indonesia. It is notable for being one of the few languages which contain a non-allophonic labiodental flap. It shows evidence of having a Papuan (non-Austronesian) substratum.