English verb conjugation
COULD CUFF

Regular verb: cuff - cuffed - cuffed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I could not cuff you could not cuff he could not cuff we could not cuff you could not cuff they could not cuff	I could not be cuffing you could not be cuffing he could not be cuffing we could not be cuffing you could not be cuffing they could not be cuffing
Perfect	V-ing perfect
I could not have cuffed you could not have cuffed he could not have cuffed we could not have cuffed you could not have cuffed they could not have cuffed	I could not have been cuffing you could not have been cuffing he could not have been cuffing we could not have been cuffing you could not have been cuffing they could not have been cuffing

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
could I not cuff? could you not cuff? could he not cuff? could we not cuff? could you not cuff? could they not cuff?	could I not be cuffing? could you not be cuffing? could he not be cuffing? could we not be cuffing? could you not be cuffing? could they not be cuffing?
Perfect	V-ing perfect
could I not have cuffed? could you not have cuffed? could he not have cuffed? could we not have cuffed? could you not have cuffed? could they not have cuffed?	could I not have been cuffing? could you not have been cuffing? could he not have been cuffing? could we not have been cuffing? could you not have been cuffing? could they not have been cuffing?