On grammatical class:

fo'ai
Creates a predicate abstraction sumti out of a full bridi clause, binding all the necessary lambda variables to the fo'a-fo'u pronoun series.
ko'ai
Creates a predicate abstraction sumti out of a full bridi clause, binding all the necessary lambda variables to the ko'a-ko'u pronoun series.
lo'oi
Description clause: create a sumti from the enclosed bridi, describing the referent of the created sumti as filling the bridi place filled with {ke'a}.
mau'a
shortening of {lo du'u ma kau *bridi*}, with {ce'u} bound to {ma kau}
xau'a
shortening of {lo du'u xu kau *bridi*}
xu'u
bridi to sumti: marks the beginning of a subordinate bridi; the whole construct is a sumti referring to the enclosed bridi

In definition:

ku'au
elidable terminator: end of LOhOI construct

In notes:

gi'ei
afterthought abstraction wrapper