What are the parts of speech in sentence phenomenal memory stunned class?

This phrase is not a complete sentence, but we can still identify the parts of speech:

* Phenomenal: Adjective

* Memory: Noun

* Stunned: Verb (past participle, often used as an adjective in this context)

* Class: Noun

Let's break it down:

* Phenomenal describes the noun "memory".

* Memory is the subject of the implied verb "stunned".

* Stunned is the past participle of the verb "to stun", acting as an adjective modifying the noun "class".

* Class is the object of the implied verb "stunned".

Therefore, the phrase describes a memory that is phenomenal and a class that is stunned by this memory.