can suction
Regular verb: suction - suctioned- suctioned

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot suction
you cannot suction
he cannot suction
we cannot suction
you cannot suction
they cannot suction 	I cannot be suctioning
you cannot be suctioning
he cannot be suctioning
we cannot be suctioning
you cannot be suctioning
they cannot be suctioning	I cannot have suctioned
you cannot have suctioned
he cannot have suctioned
we cannot have suctioned
you cannot have suctioned
they cannot have suctioned	I cannot have been suctioning
you cannot have been suctioning
he cannot have been suctioning
we cannot have been suctioning
you cannot have been suctioning
they cannot have been suctioning	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not suction?
can you not suction?
can he not suction?
can we not suction?
can you not suction?
can they not suction? 	can I not be suctioning?
can you not be suctioning?
can he not be suctioning?
can we not be suctioning?
can you not be suctioning?
can they not be suctioning? 	can I not have suctioned?
can you not have suctioned?
can he not have suctioned?
can we not have suctioned?
can you not have suctioned?
can they not have suctioned? 	can I not have been suctioning?
can you not have been suctioning?
can he not have been suctioning?
can we not have been suctioning?
can you not have been suctioning?
can they not have been suctioning?