On grammatical class:

goi
sumti assignment; used to define/assign ko'a/fo'a series pro-sumti; Latin 'sive'.
ne
non-restrictive relative phrase marker: which incidentally is associated with ...
no'u
non-restrictive appositive phrase marker: which incidentally is the same thing as ...
pe
restrictive relative phrase marker: which is associated with ...; loosest associative/possessive.
po
restrictive relative phrase marker: which is specific to ...; normal possessive physical/legal.
po'e
restrictive relative phrase marker: which belongs to ... ; inalienable possession.
po'u
restrictive appositive phrase marker: which is the same thing as.

In definition:

fo'a
pro-sumti: he/she/it/they #6 (specified by goi).
fo'e
pro-sumti: he/she/it/they #7 (specified by goi).
fo'i
pro-sumti: he/she/it/they #8 (specified by goi).
fo'o
pro-sumti: he/she/it/they #9 (specified by goi).
fo'u
pro-sumti: he/she/it/they #10 (specified by goi).
ge'u
elidable terminator: end GOI relative phrases; usually elidable in non-complex phrases.
ko'a
pro-sumti: he/she/it/they #1 (specified by goi).
ko'e
pro-sumti: he/she/it/they #2 (specified by goi).
ko'i
pro-sumti: he/she/it/they #3 (specified by goi).
ko'o
pro-sumti: he/she/it/they #4 (specified by goi).
ko'u
pro-sumti: he/she/it/they #5 (specified by goi).
cmavrgoi
x1 is the selma'o "GOI".

In notes:

ce'ai
lambda variable prenex; marks the end of introduction of lambda-scope variables.