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 mustn't massacre you mustn't massacre he mustn't massacre we mustn't massacre you mustn't massacre they mustn't massacre	I mustn't be massacring you mustn't be massacring he mustn't be massacring we mustn't be massacring you mustn't be massacring they mustn't be massacring
Perfect	V-ing perfect
I mustn't have massacred you mustn't have massacred he mustn't have massacred we mustn't have massacred you mustn't have massacred they mustn't have massacred	I mustn't have been massacring you mustn't have been massacring he mustn't have been massacring we mustn't have been massacring you mustn't have been massacring they mustn't 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
mustn't I massacre? mustn't you massacre? mustn't he massacre? mustn't we massacre? mustn't you massacre? mustn't they massacre?	mustn't I be massacring? mustn't you be massacring? mustn't he be massacring? mustn't we be massacring? mustn't you be massacring? mustn't they be massacring?
Perfect	V-ing perfect
mustn't I have massacred? mustn't you have massacred? mustn't he have massacred? mustn't we have massacred? mustn't you have massacred? mustn't they have massacred?	mustn't I have been massacring? mustn't you have been massacring? mustn't he have been massacring? mustn't we have been massacring? mustn't you have been massacring? mustn't they have been massacring?