English verb conjugation
COULD PACE

Regular verb: pace - paced - paced

Affirmation

Simple form	V-ing form
I could pace you could pace she could pace we could pace you could pace they could pace	I could be pacing you could be pacing she could be pacing we could be pacing you could be pacing they could be pacing
Perfect	V-ing perfect
I could have paced you could have paced she could have paced we could have paced you could have paced they could have paced	I could have been pacing you could have been pacing she could have been pacing we could have been pacing you could have been pacing they could have been pacing

Negation

Simple form	V-ing form
I could not pace you could not pace she could not pace we could not pace you could not pace they could not pace	I could not be pacing you could not be pacing she could not be pacing we could not be pacing you could not be pacing they could not be pacing
Perfect	V-ing perfect
I could not have paced you could not have paced she could not have paced we could not have paced you could not have paced they could not have paced	I could not have been pacing you could not have been pacing she could not have been pacing we could not have been pacing you could not have been pacing they could not have been pacing

Interrogative form

Simple form	V-ing form
could I pace? could you pace? could she pace? could we pace? could you pace? could they pace?	could I be pacing? could you be pacing? could she be pacing? could we be pacing? could you be pacing? could they be pacing?
Perfect	V-ing perfect
could I have paced? could you have paced? could she have paced? could we have paced? could you have paced? could they have paced?	could I have been pacing? could you have been pacing? could she have been pacing? could we have been pacing? could you have been pacing? could they have been pacing?

Interro-negative form

Simple form	V-ing form
could I not pace? could you not pace? could she not pace? could we not pace? could you not pace? could they not pace?	could I not be pacing? could you not be pacing? could she not be pacing? could we not be pacing? could you not be pacing? could they not be pacing?
Perfect	V-ing perfect
could I not have paced? could you not have paced? could she not have paced? could we not have paced? could you not have paced? could they not have paced?	could I not have been pacing? could you not have been pacing? could she not have been pacing? could we not have been pacing? could you not have been pacing? could they not have been pacing?