jarco modal, 1st place; showed / exhibited / demonstrated by …
In e.g. ‘One thing is certain: you'll want to arrive early.’, «.ijai'oibo» is one way to express the meaning of the colon, to indicate that the second bridi shows that or what one thing is certain, where the second ‘shows’ the first. See also: mu'u, je'i'a, jai'o.