The prefix a- holds many entries in the dictionary. I am considered with one of them:
to; toward: aside | ashore.
• in a specified state or manner: asleep | aloud.
• in the process of (an activity): a-hunting.
• on: afoot.
• in: nowadays.
To my native ear it seems adjectives formed in such a way cannot precede the noun they describe. A few Google Ngram searches cannot prove or deny this sense, but they do indicate that these adjectives are much more likely to follow than to precede the noun.
This sense could just be because I am more accustomed to this prefix forming adverbs instead of adjectives.
Can adjectives formed with the a- prefix (in a specified state or manner) precede the adjective they describe? If not, what is the rule?