English verb conjugation
CAN HARP

Regular verb: harp - harped - harped

Affirmation

Simple form	V-ing form
I can harp you can harp he can harp we can harp you can harp they can harp	I can be harping you can be harping he 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 he 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 he 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 he 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 he 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 he 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 he 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 he harp? can we harp? can you harp? can they harp?	can I be harping? can you be harping? can he 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 he 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 he 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 he 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 he 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 he 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 he have been harping? can't we have been harping? can't you have been harping? can't they have been harping?