English verb conjugation
CAN HARP

Regular verb: harp - harped - harped

Affirmation

Simple form	V-ing form
I can harp you can harp she can harp we can harp you can harp they can harp	I can be harping you can be harping she can be harping we can be harping you can be harping they can be harping
Perfect	V-ing perfect
I can have harped you can have harped she can have harped we can have harped you can have harped they can have harped	I can have been harping you can have been harping she can have been harping we can have been harping you can have been harping they can have been harping

Negation

Simple form	V-ing form
I can't harp you can't harp she can't harp we can't harp you can't harp they can't harp	I can't be harping you can't be harping she can't be harping we can't be harping you can't be harping they can't be harping
Perfect	V-ing perfect
I can't have harped you can't have harped she can't have harped we can't have harped you can't have harped they can't have harped	I can't have been harping you can't have been harping she can't have been harping we can't have been harping you can't have been harping they can't have been harping

Interrogative form

Simple form	V-ing form
can I harp? can you harp? can she harp? can we harp? can you harp? can they harp?	can I be harping? can you be harping? can she be harping? can we be harping? can you be harping? can they be harping?
Perfect	V-ing perfect
can I have harped? can you have harped? can she have harped? can we have harped? can you have harped? can they have harped?	can I have been harping? can you have been harping? can she have been harping? can we have been harping? can you have been harping? can they have been harping?

Interro-negative form

Simple form	V-ing form
can't I harp? can't you harp? can't she harp? can't we harp? can't you harp? can't they harp?	can't I be harping? can't you be harping? can't she be harping? can't we be harping? can't you be harping? can't they be harping?
Perfect	V-ing perfect
can't I have harped? can't you have harped? can't she have harped? can't we have harped? can't you have harped? can't they have harped?	can't I have been harping? can't you have been harping? can't she have been harping? can't we have been harping? can't you have been harping? can't they have been harping?