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 cannot hap you cannot hap he cannot hap we cannot hap you cannot hap they cannot hap	I cannot be haping you cannot be haping he cannot be haping we cannot be haping you cannot be haping they cannot be haping
Perfect	V-ing perfect
I cannot have haped you cannot have haped he cannot have haped we cannot have haped you cannot have haped they cannot have haped	I cannot have been haping you cannot have been haping he cannot have been haping we cannot have been haping you cannot have been haping they cannot 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 I not hap? can you not hap? can he not hap? can we not hap? can you not hap? can they not hap?	can I not be haping? can you not be haping? can he not be haping? can we not be haping? can you not be haping? can they not be haping?
Perfect	V-ing perfect
can I not have haped? can you not have haped? can he not have haped? can we not have haped? can you not have haped? can they not have haped?	can I not have been haping? can you not have been haping? can he not have been haping? can we not have been haping? can you not have been haping? can they not have been haping?