English verb conjugation
COULD HAP

Regular verb: hap - haped - haped

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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