could suction
Verbo regolare: suction - suctioned- suctioned

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could suction
you could suction
he could suction
we could suction
you could suction
they could suction 	I could be suctioning
you could be suctioning
he could be suctioning
we could be suctioning
you could be suctioning
they could be suctioning	I could have suctioned
you could have suctioned
he could have suctioned
we could have suctioned
you could have suctioned
they could have suctioned	I could have been suctioning
you could have been suctioning
he could have been suctioning
we could have been suctioning
you could have been suctioning
they could have been suctioning	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not suction
you could not suction
he could not suction
we could not suction
you could not suction
they could not suction 	I could not be suctioning
you could not be suctioning
he could not be suctioning
we could not be suctioning
you could not be suctioning
they could not be suctioning	I could not have suctioned
you could not have suctioned
he could not have suctioned
we could not have suctioned
you could not have suctioned
they could not have suctioned	I could not have been suctioning
you could not have been suctioning
he could not have been suctioning
we could not have been suctioning
you could not have been suctioning
they could not have been suctioning	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I suction?
could you suction?
could he suction?
could we suction?
could you suction?
could they suction? 	could I be suctioning?
could you be suctioning?
could he be suctioning?
could we be suctioning?
could you be suctioning?
could they be suctioning? 	could I have suctioned?
could you have suctioned?
could he have suctioned?
could we have suctioned?
could you have suctioned?
could they have suctioned? 	could I have been suctioning?
could you have been suctioning?
could he have been suctioning?
could we have been suctioning?
could you have been suctioning?
could they have been suctioning? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not suction?
could you not suction?
could he not suction?
could we not suction?
could you not suction?
could they not suction? 	could I not be suctioning?
could you not be suctioning?
could he not be suctioning?
could we not be suctioning?
could you not be suctioning?
could they not be suctioning? 	could I not have suctioned?
could you not have suctioned?
could he not have suctioned?
could we not have suctioned?
could you not have suctioned?
could they not have suctioned? 	could I not have been suctioning?
could you not have been suctioning?
could he not have been suctioning?
could we not have been suctioning?
could you not have been suctioning?
could they not have been suctioning?