English verb conjugation
MUST IMP

Regular verb: imp - imped - imped

Affirmation

Simple form	V-ing form
I must imp you must imp he must imp we must imp you must imp they must imp	I must be imping you must be imping he must be imping we must be imping you must be imping they must be imping
Perfect	V-ing perfect
I must have imped you must have imped he must have imped we must have imped you must have imped they must have imped	I must have been imping you must have been imping he must have been imping we must have been imping you must have been imping they must have been imping

Negation

Simple form	V-ing form
I must not imp you must not imp he must not imp we must not imp you must not imp they must not imp	I must not be imping you must not be imping he must not be imping we must not be imping you must not be imping they must not be imping
Perfect	V-ing perfect
I must not have imped you must not have imped he must not have imped we must not have imped you must not have imped they must not have imped	I must not have been imping you must not have been imping he must not have been imping we must not have been imping you must not have been imping they must not have been imping

Interrogative form

Simple form	V-ing form
must I imp? must you imp? must he imp? must we imp? must you imp? must they imp?	must I be imping? must you be imping? must he be imping? must we be imping? must you be imping? must they be imping?
Perfect	V-ing perfect
must I have imped? must you have imped? must he have imped? must we have imped? must you have imped? must they have imped?	must I have been imping? must you have been imping? must he have been imping? must we have been imping? must you have been imping? must they have been imping?

Interro-negative form

Simple form	V-ing form
must I not imp? must you not imp? must he not imp? must we not imp? must you not imp? must they not imp?	must I not be imping? must you not be imping? must he not be imping? must we not be imping? must you not be imping? must they not be imping?
Perfect	V-ing perfect
must I not have imped? must you not have imped? must he not have imped? must we not have imped? must you not have imped? must they not have imped?	must I not have been imping? must you not have been imping? must he not have been imping? must we not have been imping? must you not have been imping? must they not have been imping?