Entry record from de Josselin de Jong (1947): Ili'uun Erai
nau(n)
• know; be able to.
nanau(n)who knows
aonau(n)I know
aonanau(n)I know already, now I know, I who know
aota nanau(n)I don't know yet etc
nanau(n)
• know (in which na- may function as an emphatic reduplication.
ta(na)nau(n)
• not allowed to; unknown (in the sense of amazing, inconceivable, exceedingly).
aaru tananau(n)exceedingly many, innumerable