Quenya 

náto

it is that

náto interjection "it is that" (emphatic word for "yes"?) (VT49:28, 29)

náto

interjection. it is that; *yes (emphatic)

uito

it is not that

uito interjection "it is not that" (emphatic word for "no"?) Compare ui, náto (VT49:28, 29)

uito

interjection. it is not that