English verb conjugation
COULD CLUCK

Regular verb: cluck - clucked - clucked

Affirmation

Simple form	V-ing form
I could cluck you could cluck he could cluck we could cluck you could cluck they could cluck	I could be clucking you could be clucking he could be clucking we could be clucking you could be clucking they could be clucking
Perfect	V-ing perfect
I could have clucked you could have clucked he could have clucked we could have clucked you could have clucked they could have clucked	I could have been clucking you could have been clucking he could have been clucking we could have been clucking you could have been clucking they could have been clucking

Negation

Simple form	V-ing form
I could not cluck you could not cluck he could not cluck we could not cluck you could not cluck they could not cluck	I could not be clucking you could not be clucking he could not be clucking we could not be clucking you could not be clucking they could not be clucking
Perfect	V-ing perfect
I could not have clucked you could not have clucked he could not have clucked we could not have clucked you could not have clucked they could not have clucked	I could not have been clucking you could not have been clucking he could not have been clucking we could not have been clucking you could not have been clucking they could not have been clucking

Interrogative form

Simple form	V-ing form
could I cluck? could you cluck? could he cluck? could we cluck? could you cluck? could they cluck?	could I be clucking? could you be clucking? could he be clucking? could we be clucking? could you be clucking? could they be clucking?
Perfect	V-ing perfect
could I have clucked? could you have clucked? could he have clucked? could we have clucked? could you have clucked? could they have clucked?	could I have been clucking? could you have been clucking? could he have been clucking? could we have been clucking? could you have been clucking? could they have been clucking?

Interro-negative form

Simple form	V-ing form
could I not cluck? could you not cluck? could he not cluck? could we not cluck? could you not cluck? could they not cluck?	could I not be clucking? could you not be clucking? could he not be clucking? could we not be clucking? could you not be clucking? could they not be clucking?
Perfect	V-ing perfect
could I not have clucked? could you not have clucked? could he not have clucked? could we not have clucked? could you not have clucked? could they not have clucked?	could I not have been clucking? could you not have been clucking? could he not have been clucking? could we not have been clucking? could you not have been clucking? could they not have been clucking?