re: #104 Nyet

OK, up have I looked and “up” in “looked up” or “put up” or “out” in “hang out” is officially called a particle, not a preposition. So it can’t fall under the rule in any case.

‘particle’ is the basket that linguists throw words in when they can’t figure out what else to call them:

What is a particle?

Definition

A particle is a word that

does not belong to one of the main classes of words
is invariable in form, and
typically has grammatical or pragmatic meaning.