On grammatical class:

du'u
abstractor: predication/bridi abstractor; x1 is predication [bridi] expressed in sentence x2.
jei
abstractor: truth-value abstractor; x1 is truth value of [bridi] under epistemology x2.
ka
abstractor: property/quality abstractor (-ness); x1 is quality/property exhibited by [bridi].
li'i
abstractor: experience abstractor; x1 is x2's experience of [bridi] (participant or observer).
mu'e
abstractor: achievement (event) abstractor; x1 is the event-as-a-point/achievement of [bridi].
ni
abstractor: quantity/amount abstractor; x1 is quantity/amount of [bridi] measured on scale x2.
nu
abstractor: generalized event abstractor; x1 is state/process/achievement/activity of [bridi].
nu'a
convert mathematical expression (mex) operator to a selbri/tanru component.
nu'i
start forethought termset construct; marks start of place structure set with logical connection.
nu'u
elidable terminator: end forethought termset; usually elidable except with following sumti.
pu'u
abstractor: process (event) abstractor; x1 is process of [bridi] proceeding in stages x2.
si'o
abstractor: idea/concept abstractor; x1 is x2's concept of [bridi].
su'u
abstractor: generalized abstractor (how); x1 is [bridi] as a non-specific abstraction of type x2.
za'i
abstractor: state (event) abstractor; x1 is continuous state of [bridi] being true.
zu'o
abstractor: activity (event) abstractor; x1 is abstract activity of [bridi] composed of x2.
sedu'u
compound abstractor: sentence/equation abstract; x1 is text expressing [bridi] which is x2.
bu'ai
abstractor: abstractor to create logically quantified selbri variable to be used in predicate logic of third or higher order.
kai'u
abstractor: x1 (x2, ...) are such that they satisfy [bridi], binding to the open {ce'u} slots.
poi'i
x1 is such that poi'i abstraction is true; x1 binds ke'a within the abstraction.