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 must not suction you must not suction he must not suction we must not suction you must not suction they must not suction	I must not be suctioning you must not be suctioning he must not be suctioning we must not be suctioning you must not be suctioning they must not be suctioning
Perfect	V-ing perfect
I must not have suctioned you must not have suctioned he must not have suctioned we must not have suctioned you must not have suctioned they must not have suctioned	I must not have been suctioning you must not have been suctioning he must not have been suctioning we must not have been suctioning you must not have been suctioning they must not 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
must I not suction? must you not suction? must he not suction? must we not suction? must you not suction? must they not suction?	must I not be suctioning? must you not be suctioning? must he not be suctioning? must we not be suctioning? must you not be suctioning? must they not be suctioning?
Perfect	V-ing perfect
must I not have suctioned? must you not have suctioned? must he not have suctioned? must we not have suctioned? must you not have suctioned? must they not have suctioned?	must I not have been suctioning? must you not have been suctioning? must he not have been suctioning? must we not have been suctioning? must you not have been suctioning? must they not have been suctioning?