On grammatical class:

ju'aku'i
evidential: although, even though, while, whilst
oi se'i bu'o oi se'i bu'o
oopservative attitudinal: "Oops, I did it again!"
po'onai
discursive: not exclusively, among others, including but not limited to.
zo'oro'u
Attitudinal: innuendo/sexual wordplay marker (the "sexy ;) " emoji).