hi all.
i've come to a question that, for all of my flipping through gordon, i
can't find the answer. i'm hoping someone here can shed some light on this.

the book i'm using to learn old norse states:
- j as an augment or i/j-thematic is realized as i following a long stem
syllable, or a short stem syllable ending in g.

in trying to decline (frægj-) in the Fem;Nom;Sg or Neu;Nom/Acc;Pl the
book states the form is "fræg". however, since (frægj-) is a long
syllable, i would expect the j to be realized as an i and you'd have
*frægi. (similar to the Nom;Pl of (ríkj-) being ríki).