I think that Chakobsa also uses terms in Quechua, Inca's language. When Muad'dib turns in preacher, a fremen thinks "he count like the ancians" (it must be like this, I read the book in french) and this count looks like quechua numbers : huk, iskay, kinsa, tawa, pisqa, suqta, qanchis, pusaq...
I did'nt find anywhere if someone has ever seen that. Did someone hear about this ?