English verb conjugation
MUST MUG

Regular verb: mug - mugged - mugged

Affirmation

Simple form	V-ing form
I must mug you must mug she must mug we must mug you must mug they must mug	I must be mugging you must be mugging she must be mugging we must be mugging you must be mugging they must be mugging
Perfect	V-ing perfect
I must have mugged you must have mugged she must have mugged we must have mugged you must have mugged they must have mugged	I must have been mugging you must have been mugging she must have been mugging we must have been mugging you must have been mugging they must have been mugging

Negation

Simple form	V-ing form
I must not mug you must not mug she must not mug we must not mug you must not mug they must not mug	I must not be mugging you must not be mugging she must not be mugging we must not be mugging you must not be mugging they must not be mugging
Perfect	V-ing perfect
I must not have mugged you must not have mugged she must not have mugged we must not have mugged you must not have mugged they must not have mugged	I must not have been mugging you must not have been mugging she must not have been mugging we must not have been mugging you must not have been mugging they must not have been mugging

Interrogative form

Simple form	V-ing form
must I mug? must you mug? must she mug? must we mug? must you mug? must they mug?	must I be mugging? must you be mugging? must she be mugging? must we be mugging? must you be mugging? must they be mugging?
Perfect	V-ing perfect
must I have mugged? must you have mugged? must she have mugged? must we have mugged? must you have mugged? must they have mugged?	must I have been mugging? must you have been mugging? must she have been mugging? must we have been mugging? must you have been mugging? must they have been mugging?

Interro-negative form

Simple form	V-ing form
must I not mug? must you not mug? must she not mug? must we not mug? must you not mug? must they not mug?	must I not be mugging? must you not be mugging? must she not be mugging? must we not be mugging? must you not be mugging? must they not be mugging?
Perfect	V-ing perfect
must I not have mugged? must you not have mugged? must she not have mugged? must we not have mugged? must you not have mugged? must they not have mugged?	must I not have been mugging? must you not have been mugging? must she not have been mugging? must we not have been mugging? must you not have been mugging? must they not have been mugging?