English verb conjugation
MUST MASSACRE

Regular verb: massacre - massacred - massacred

Affirmation

Simple form	V-ing form
I must massacre you must massacre he must massacre we must massacre you must massacre they must massacre	I must be massacring you must be massacring he must be massacring we must be massacring you must be massacring they must be massacring
Perfect	V-ing perfect
I must have massacred you must have massacred he must have massacred we must have massacred you must have massacred they must have massacred	I must have been massacring you must have been massacring he must have been massacring we must have been massacring you must have been massacring they must have been massacring

Negation

Simple form	V-ing form
I must not massacre you must not massacre he must not massacre we must not massacre you must not massacre they must not massacre	I must not be massacring you must not be massacring he must not be massacring we must not be massacring you must not be massacring they must not be massacring
Perfect	V-ing perfect
I must not have massacred you must not have massacred he must not have massacred we must not have massacred you must not have massacred they must not have massacred	I must not have been massacring you must not have been massacring he must not have been massacring we must not have been massacring you must not have been massacring they must not have been massacring

Interrogative form

Simple form	V-ing form
must I massacre? must you massacre? must he massacre? must we massacre? must you massacre? must they massacre?	must I be massacring? must you be massacring? must he be massacring? must we be massacring? must you be massacring? must they be massacring?
Perfect	V-ing perfect
must I have massacred? must you have massacred? must he have massacred? must we have massacred? must you have massacred? must they have massacred?	must I have been massacring? must you have been massacring? must he have been massacring? must we have been massacring? must you have been massacring? must they have been massacring?

Interro-negative form

Simple form	V-ing form
must I not massacre? must you not massacre? must he not massacre? must we not massacre? must you not massacre? must they not massacre?	must I not be massacring? must you not be massacring? must he not be massacring? must we not be massacring? must you not be massacring? must they not be massacring?
Perfect	V-ing perfect
must I not have massacred? must you not have massacred? must he not have massacred? must we not have massacred? must you not have massacred? must they not have massacred?	must I not have been massacring? must you not have been massacring? must he not have been massacring? must we not have been massacring? must you not have been massacring? must they not have been massacring?