Wolfgang's palindrome above unfortunately loses its validity because it depends on all the words preceded by the indefinite article being actual singular nouns which can take the indefinite article.

It falls down on this score twice.

Firstly, by what stretch of the imagination can one have "a wet" ?

Secondly, although cows do "chew the cud", no cow has ever chewed "a cud", nor has any veterinary surgeon nor farmer ever seen "a cud" .

I look forward to being contradicted by all other pedants ....

Murray