Note that when the subject is postverbal (motion verbs, unaccusative verbs) the clitic is banned and the past participle of compound forms (if any) is invariably masc.
Adverbial complements of caused motion verbs like put are adverbial complements.
(Originally, pas would have been used specifically with motion verbs, as in "I didn't walk a step", and then was generalized to other verbs.)
These are the active verbs, motion verbs, and stative verbs.
This particle can also mean "through" or "along" or "out of" when used with motion verbs.
When a static adposition combines with a motion verb, it sometimes takes on a directional meaning.
When telic adpositions combine with a motion verb, the result is a telic verb phrase.
For a similar group of intransitive verbs (especially motion verbs), it is the subject which is incorporated.
Proto-Slavic also had paired motion verbs (e.g. "run", "walk", "swim", "fly", but also "ride", "carry", "lead", "chase", etc.).
-tu marks animate plurality (except with some motion verbs).