No, I know, I'm saying that the expected, compositional, interpretation of the phrase (a) exists and (b) is just a slightly archaic passive, and it would still be perfectly cromulent, just backward.

Passive voice is formed with the word ‘by’ not ‘of’.

The verb ‘to comprise of’ can exist and have a different meaning that ‘to comprise’ or its passive ‘to be comprised by’ - and have a different passive (to be comprised of).

Like, the verbs ‘smell’ and ‘smell of’ do not mean the same thing, nor is one the passive of the other.

- I smell roses - roses are smelled by me - I smell of roses - roses are smelled of by me

Four very different meanings.

Gaul should be ruled by Rome. There are no three parts.