English verb conjugation
MUST MUG

Regular verb: mug - mugged - mugged

Affirmation

Simple form	V-ing form
I must mug you must mug he must mug we must mug you must mug they must mug	I must be mugging you must be mugging he 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 he 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 he 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 he 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 he 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 he 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 he 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 he mug? must we mug? must you mug? must they mug?	must I be mugging? must you be mugging? must he 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 he 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 he 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 he 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 he 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 he 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 he not have been mugging? must we not have been mugging? must you not have been mugging? must they not have been mugging?