Which statement is the safest summary?

Cause of Ghayr Munsarif: The Pattern of a Verb

• Every actual verb is a ghayr munsarif noun
• Every proper name is on the pattern of a verb
• Every أَفْعَل-like adjective qualifies even with a round-tā feminine
• The cause applies when a noun/adjective has the relevant verb pattern plus the required proper-name or adjective condition; actual verbs and the stated counterexamples are excluded