On grammatical class:

be'ucu'i
attitudinal modifier: lack/need - presence/satisfaction - satiation.
be'unai
attitudinal modifier: lack/need - presence/satisfaction - satiation.
fu'inai
attitudinal modifier: easy - difficult.
ga'icu'i
attitudinal modifier/honorific: hauteur - equal rank - meekness; used with one of equal rank.
ga'inai
attitudinal modifier/honorific: hauteur - equal rank - meekness; used with one of higher rank.
ji'einai
animate - inanimate
ju'ocai
attitudinal modifier: intense certainty.
ju'ocu'i
attitudinal modifier: certainty - uncertainty - impossibility.
ju'onai
attitudinal modifier: certainty - uncertainty - impossibility.
la'acu'i
discursive: probability - possibility - improbability.
le'ocu'i
attitudinal modifier: aggressive - passive - defensive.
le'onai
attitudinal modifier: aggressive - passive - defensive.
ri'enai
attitudinal modifier: release of emotion - emotion restraint.
se'anai
attitudinal modifier: self-sufficiency - dependency.
se'inai
attitudinal modifier: self-oriented - other-oriented.
vu'enai
attitudinal modifier: virtue - sin.
xo'onai
attitudinal modifier: sarcastically - sincerely/honestly
zo'ocu'i
attitudinal modifier: humorously - dully - seriously.
zo'onai
attitudinal modifier: humorously - dully - seriously.