For the second part (concerning number): Old Javanese (Kawi), Modern Javanese (Sundic, W. Malayo-Polynesian)(mentioned in Uspensky 1965: 212, 1972: 59; for more details see Teselkin 1961: 38, 1965: 45).In Pirahã (Mura, Paezan) there are only three forms of personal pronouns: 1st, 2nd, and 3rd. There are no special plural forms for these pronouns. Generally, 1PL and 2PL are expressed periphrastically. Ex. 1Incl. is expressed by the conjunction of 1st and 2nd person forms. (Everett 1986: 280-1)