Anonymous ID: 87b5c7 Jan. 9, 2020, 5:08 a.m. No.7761037   🗄️.is 🔗kun   >>1042

>>7761011

>must of

Modal verbs, such as must, could, should, would, etc, are never, ever followed by a preposition such as of, but by an auxiliary verb like have or a regular verb.

Ergo, must of should be must have.