5. Morphology in Relation to Phonology

F. Plank, Morphology I: 5. Morphology in Relation to Phonology 33
Rule-governed: It depends on stress whether or not there is a ge- present.
Only verbs with stressed initial syllable – and all such verbs – take ge-;
verbs whose initial syllable is unstressed don't take ge-.
Thus, we have a phonological condition on a morphological alternation.
The alternation itself is non-phonological: there are no plausible (mor-)
phonological rules changing /ge/ to /Ø/ or the other way round.
(The only exception I am aware of: gebeneDEIT; or is it: Du bist
beneDEIT unter den Frauen und beneDEIT ist die Frucht Deines Leibes,
Jesus 'Blessed art thou among women, and blessed is the fruit of thy
womb, Jesus'?)
Which raises the question of what stress itself depends on.