euphonic

Let a euphonic influence eject the -t, as often as the word occurs in the nominative case.

From the form vissdum we see that the prterite is not strong, but weak; therefore that vissa is euphonic for vista.

As Dak verb stems end in a vowel it is preceded by a euphonic h.

In is the possessive pronoun, cuchi the sign of the imperfect, t in the perfect is a euphonic letter.