English verb conjugation
CAN PACE

Regular verb: pace - paced - paced

Affirmation

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

Negation

Simple form	V-ing form
I can't pace you can't pace he can't pace we can't pace you can't pace they can't pace	I can't be pacing you can't be pacing he can't be pacing we can't be pacing you can't be pacing they can't be pacing
Perfect	V-ing perfect
I can't have paced you can't have paced he can't have paced we can't have paced you can't have paced they can't have paced	I can't have been pacing you can't have been pacing he can't have been pacing we can't have been pacing you can't have been pacing they can't have been pacing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I pace? can't you pace? can't he pace? can't we pace? can't you pace? can't they pace?	can't I be pacing? can't you be pacing? can't he be pacing? can't we be pacing? can't you be pacing? can't they be pacing?
Perfect	V-ing perfect
can't I have paced? can't you have paced? can't he have paced? can't we have paced? can't you have paced? can't they have paced?	can't I have been pacing? can't you have been pacing? can't he have been pacing? can't we have been pacing? can't you have been pacing? can't they have been pacing?