We will, however, ignore this form, since it is probably not synchronically relevant. According to the dictionary, and a number of informants, moe has the following forms:
simple |
-e form |
comparative |
superlative |
mu |
mūjə |
mūjər |
mūst |
Once again Zonneveld would explain these forms as coming from underlying /mūj/. To do this however he would have to extend his morpheme-structure constraint to adjectives.
As far as Zonneveld's solution for the back rounded vowel cases is concerned, that it is a case of glide-deletion rather than a case of glide insertion, this is only possible because the forms he posits /kūj/, /vlōj/, /strōj/ involve vowel-glide clusters that are permitted by the morpheme-structure rules of Dutch. Permissible clusters are as follows:
front vowels |
back vowels |
w# |
ȳw# |
ūj# |
ēw# |
|
ōj# |
|
āj# |
Let uw now examine the cases where glide-insertion takes place after front rounded vowels:
a) with /ȳ/ |
|
|
individu |
individuën |
/ind v dȳ/ |
/individy ən/ |
individual(s) |
|
continu |
continuë |
/kont nȳ/ |
/kont nȳ
ə/ |
continuous |
|
cru |
cruë |
/krȳ/ |
/kry ə/ |
crude |
|
(some informants produced /j/-forms for the last two words, in general these formations seemed to be awkward) |
b) with / / |
|
|
reu |
reuën |
/r / |
/r jən/ |
male dog(s) |
|
keu |
keuën (keu's) |
/k / |
/k jən/ |
cue(s) |
|
bleu |
bleuën |
/bl / |
bl jə/ |
timid |
By HG-INSERTION we should expect only forms with /

/. These seem to be the normal case with /ȳ/, though there is some disagreement among informants. With /

/, however, insertion of /j/ seems to be regular. Among some informants there was a tendency to insert /j/ in the Dutch words, but not in the French loans so as all the /ȳ/-forms and
bleu.
Zonneveld, however, would forecast only forms with /

/ here. In addition his explanation for the back vowel cases will not work here either. He would have to derive the forms with /j/ from underlying: /r

j/, /bl

j/. However the sequence /

j#/ is not permitted by the morpheme-structure rules of Dutch, which permit only final combinations of front tense vowels with /w/ and back tense vowels with /j/. In other words it is difficult to see how we could deal with the /

/-forms otherwise than by means of a rule of J-INSERTION.
The /y/-forms would in our analysis would be exempted by a redundancy rule from undergoing J-INSERTION, for those speakers who do not have the /j/-forms.