English verb conjugation
COULD CLAMP

Regular verb: clamp - clamped - clamped

Affirmation

Simple form	V-ing form
I could clamp you could clamp he could clamp we could clamp you could clamp they could clamp	I could be clamping you could be clamping he could be clamping we could be clamping you could be clamping they could be clamping
Perfect	V-ing perfect
I could have clamped you could have clamped he could have clamped we could have clamped you could have clamped they could have clamped	I could have been clamping you could have been clamping he could have been clamping we could have been clamping you could have been clamping they could have been clamping

Negation

Simple form	V-ing form
I could not clamp you could not clamp he could not clamp we could not clamp you could not clamp they could not clamp	I could not be clamping you could not be clamping he could not be clamping we could not be clamping you could not be clamping they could not be clamping
Perfect	V-ing perfect
I could not have clamped you could not have clamped he could not have clamped we could not have clamped you could not have clamped they could not have clamped	I could not have been clamping you could not have been clamping he could not have been clamping we could not have been clamping you could not have been clamping they could not have been clamping

Interrogative form

Simple form	V-ing form
could I clamp? could you clamp? could he clamp? could we clamp? could you clamp? could they clamp?	could I be clamping? could you be clamping? could he be clamping? could we be clamping? could you be clamping? could they be clamping?
Perfect	V-ing perfect
could I have clamped? could you have clamped? could he have clamped? could we have clamped? could you have clamped? could they have clamped?	could I have been clamping? could you have been clamping? could he have been clamping? could we have been clamping? could you have been clamping? could they have been clamping?

Interro-negative form

Simple form	V-ing form
could I not clamp? could you not clamp? could he not clamp? could we not clamp? could you not clamp? could they not clamp?	could I not be clamping? could you not be clamping? could he not be clamping? could we not be clamping? could you not be clamping? could they not be clamping?
Perfect	V-ing perfect
could I not have clamped? could you not have clamped? could he not have clamped? could we not have clamped? could you not have clamped? could they not have clamped?	could I not have been clamping? could you not have been clamping? could he not have been clamping? could we not have been clamping? could you not have been clamping? could they not have been clamping?