selbrisni lujvo

x1 (text) represents relation for a predicate relationship represented by x2 (text) among referents of x3 that are arguments (sequence/set of texts).

bridi, selbri and elements of terbri are referents of brisni, selbrisni and elements of terbrisni respectively.

In notes:

brisni
x1 (text) represents a predicate relationship with relation represented by x2 (text) among referents of x3 that are arguments (sequence/set of texts).
selbri
x1 (ka) is the relation of predicate x2 (du'u), which has arguments x3 (sequence of sumti).
terbrisni
x1 (sequence/set of texts) are arguments, the referents of which are related by relation represented by x2 (text) for a predicate relationship represented by x3 (text).