could hap
Regular verb: hap - haped- haped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?