English verb conjugation
MUST SUCTION

Regular verb: suction - suctioned - suctioned

Affirmation

Simple form	V-ing form
I must suction you must suction he must suction we must suction you must suction they must suction	I must be suctioning you must be suctioning he must be suctioning we must be suctioning you must be suctioning they must be suctioning
Perfect	V-ing perfect
I must have suctioned you must have suctioned he must have suctioned we must have suctioned you must have suctioned they must have suctioned	I must have been suctioning you must have been suctioning he must have been suctioning we must have been suctioning you must have been suctioning they must have been suctioning

Negation

Simple form	V-ing form
I mustn't suction you mustn't suction he mustn't suction we mustn't suction you mustn't suction they mustn't suction	I mustn't be suctioning you mustn't be suctioning he mustn't be suctioning we mustn't be suctioning you mustn't be suctioning they mustn't be suctioning
Perfect	V-ing perfect
I mustn't have suctioned you mustn't have suctioned he mustn't have suctioned we mustn't have suctioned you mustn't have suctioned they mustn't have suctioned	I mustn't have been suctioning you mustn't have been suctioning he mustn't have been suctioning we mustn't have been suctioning you mustn't have been suctioning they mustn't have been suctioning

Interrogative form

Simple form	V-ing form
must I suction? must you suction? must he suction? must we suction? must you suction? must they suction?	must I be suctioning? must you be suctioning? must he be suctioning? must we be suctioning? must you be suctioning? must they be suctioning?
Perfect	V-ing perfect
must I have suctioned? must you have suctioned? must he have suctioned? must we have suctioned? must you have suctioned? must they have suctioned?	must I have been suctioning? must you have been suctioning? must he have been suctioning? must we have been suctioning? must you have been suctioning? must they have been suctioning?

Interro-negative form

Simple form	V-ing form
mustn't I suction? mustn't you suction? mustn't he suction? mustn't we suction? mustn't you suction? mustn't they suction?	mustn't I be suctioning? mustn't you be suctioning? mustn't he be suctioning? mustn't we be suctioning? mustn't you be suctioning? mustn't they be suctioning?
Perfect	V-ing perfect
mustn't I have suctioned? mustn't you have suctioned? mustn't he have suctioned? mustn't we have suctioned? mustn't you have suctioned? mustn't they have suctioned?	mustn't I have been suctioning? mustn't you have been suctioning? mustn't he have been suctioning? mustn't we have been suctioning? mustn't you have been suctioning? mustn't they have been suctioning?