could sucker
Regular verb: sucker - suckered- suckered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sucker
you could sucker
he could sucker
we could sucker
you could sucker
they could sucker 	I could be suckering
you could be suckering
he could be suckering
we could be suckering
you could be suckering
they could be suckering	I could have suckered
you could have suckered
he could have suckered
we could have suckered
you could have suckered
they could have suckered	I could have been suckering
you could have been suckering
he could have been suckering
we could have been suckering
you could have been suckering
they could have been suckering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not sucker
you could not sucker
he could not sucker
we could not sucker
you could not sucker
they could not sucker 	I could not be suckering
you could not be suckering
he could not be suckering
we could not be suckering
you could not be suckering
they could not be suckering	I could not have suckered
you could not have suckered
he could not have suckered
we could not have suckered
you could not have suckered
they could not have suckered	I could not have been suckering
you could not have been suckering
he could not have been suckering
we could not have been suckering
you could not have been suckering
they could not have been suckering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sucker?
could you sucker?
could he sucker?
could we sucker?
could you sucker?
could they sucker? 	could I be suckering?
could you be suckering?
could he be suckering?
could we be suckering?
could you be suckering?
could they be suckering? 	could I have suckered?
could you have suckered?
could he have suckered?
could we have suckered?
could you have suckered?
could they have suckered? 	could I have been suckering?
could you have been suckering?
could he have been suckering?
could we have been suckering?
could you have been suckering?
could they have been suckering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not sucker?
could you not sucker?
could he not sucker?
could we not sucker?
could you not sucker?
could they not sucker? 	could I not be suckering?
could you not be suckering?
could he not be suckering?
could we not be suckering?
could you not be suckering?
could they not be suckering? 	could I not have suckered?
could you not have suckered?
could he not have suckered?
could we not have suckered?
could you not have suckered?
could they not have suckered? 	could I not have been suckering?
could you not have been suckering?
could he not have been suckering?
could we not have been suckering?
could you not have been suckering?
could they not have been suckering?