could cuff
Regular verb: cuff - cuffed- cuffed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cuff
you could cuff
he could cuff
we could cuff
you could cuff
they could cuff 	I could be cuffing
you could be cuffing
he could be cuffing
we could be cuffing
you could be cuffing
they could be cuffing	I could have cuffed
you could have cuffed
he could have cuffed
we could have cuffed
you could have cuffed
they could have cuffed	I could have been cuffing
you could have been cuffing
he could have been cuffing
we could have been cuffing
you could have been cuffing
they could have been cuffing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't cuff
you couldn't cuff
he couldn't cuff
we couldn't cuff
you couldn't cuff
they couldn't cuff 	I couldn't be cuffing
you couldn't be cuffing
he couldn't be cuffing
we couldn't be cuffing
you couldn't be cuffing
they couldn't be cuffing	I couldn't have cuffed
you couldn't have cuffed
he couldn't have cuffed
we couldn't have cuffed
you couldn't have cuffed
they couldn't have cuffed	I couldn't have been cuffing
you couldn't have been cuffing
he couldn't have been cuffing
we couldn't have been cuffing
you couldn't have been cuffing
they couldn't have been cuffing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cuff?
could you cuff?
could he cuff?
could we cuff?
could you cuff?
could they cuff? 	could I be cuffing?
could you be cuffing?
could he be cuffing?
could we be cuffing?
could you be cuffing?
could they be cuffing? 	could I have cuffed?
could you have cuffed?
could he have cuffed?
could we have cuffed?
could you have cuffed?
could they have cuffed? 	could I have been cuffing?
could you have been cuffing?
could he have been cuffing?
could we have been cuffing?
could you have been cuffing?
could they have been cuffing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I cuff?
couldn't you cuff?
couldn't he cuff?
couldn't we cuff?
couldn't you cuff?
couldn't they cuff? 	couldn't I be cuffing?
couldn't you be cuffing?
couldn't he be cuffing?
couldn't we be cuffing?
couldn't you be cuffing?
couldn't they be cuffing? 	couldn't I have cuffed?
couldn't you have cuffed?
couldn't he have cuffed?
couldn't we have cuffed?
couldn't you have cuffed?
couldn't they have cuffed? 	couldn't I have been cuffing?
couldn't you have been cuffing?
couldn't he have been cuffing?
couldn't we have been cuffing?
couldn't you have been cuffing?
couldn't they have been cuffing?