English verb conjugation
CAN HAP

Regular verb: hap - haped - haped

Affirmation

Simple form	V-ing form
I can hap you can hap he can hap we can hap you can hap they can hap	I can be haping you can be haping he can be haping we can be haping you can be haping they can be haping
Perfect	V-ing perfect
I can have haped you can have haped he can have haped we can have haped you can have haped they can have haped	I can have been haping you can have been haping he can have been haping we can have been haping you can have been haping they can have been haping

Negation

Simple form	V-ing form
I can't hap you can't hap he can't hap we can't hap you can't hap they can't hap	I can't be haping you can't be haping he can't be haping we can't be haping you can't be haping they can't be haping
Perfect	V-ing perfect
I can't have haped you can't have haped he can't have haped we can't have haped you can't have haped they can't have haped	I can't have been haping you can't have been haping he can't have been haping we can't have been haping you can't have been haping they can't have been haping

Interrogative form

Simple form	V-ing form
can I hap? can you hap? can he hap? can we hap? can you hap? can they hap?	can I be haping? can you be haping? can he be haping? can we be haping? can you be haping? can they be haping?
Perfect	V-ing perfect
can I have haped? can you have haped? can he have haped? can we have haped? can you have haped? can they have haped?	can I have been haping? can you have been haping? can he have been haping? can we have been haping? can you have been haping? can they have been haping?

Interro-negative form

Simple form	V-ing form
can't I hap? can't you hap? can't he hap? can't we hap? can't you hap? can't they hap?	can't I be haping? can't you be haping? can't he be haping? can't we be haping? can't you be haping? can't they be haping?
Perfect	V-ing perfect
can't I have haped? can't you have haped? can't he have haped? can't we have haped? can't you have haped? can't they have haped?	can't I have been haping? can't you have been haping? can't he have been haping? can't we have been haping? can't you have been haping? can't they have been haping?