could sucker
Regular verb: sucker - suckered- suckered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sucker
you could sucker
she could sucker
we could sucker
you could sucker
they could sucker 	I could be suckering
you could be suckering
she could be suckering
we could be suckering
you could be suckering
they could be suckering	I could have suckered
you could have suckered
she 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
she 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 couldn't sucker
you couldn't sucker
she couldn't sucker
we couldn't sucker
you couldn't sucker
they couldn't sucker 	I couldn't be suckering
you couldn't be suckering
she couldn't be suckering
we couldn't be suckering
you couldn't be suckering
they couldn't be suckering	I couldn't have suckered
you couldn't have suckered
she couldn't have suckered
we couldn't have suckered
you couldn't have suckered
they couldn't have suckered	I couldn't have been suckering
you couldn't have been suckering
she couldn't have been suckering
we couldn't have been suckering
you couldn't have been suckering
they couldn't have been suckering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sucker?
could you sucker?
could she sucker?
could we sucker?
could you sucker?
could they sucker? 	could I be suckering?
could you be suckering?
could she be suckering?
could we be suckering?
could you be suckering?
could they be suckering? 	could I have suckered?
could you have suckered?
could she 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 she 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 	
couldn't I sucker?
couldn't you sucker?
couldn't she sucker?
couldn't we sucker?
couldn't you sucker?
couldn't they sucker? 	couldn't I be suckering?
couldn't you be suckering?
couldn't she be suckering?
couldn't we be suckering?
couldn't you be suckering?
couldn't they be suckering? 	couldn't I have suckered?
couldn't you have suckered?
couldn't she have suckered?
couldn't we have suckered?
couldn't you have suckered?
couldn't they have suckered? 	couldn't I have been suckering?
couldn't you have been suckering?
couldn't she have been suckering?
couldn't we have been suckering?
couldn't you have been suckering?
couldn't they have been suckering?