could cupel
Regular verb: cupel - cupeled- cupeled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cupel
you could cupel
she could cupel
we could cupel
you could cupel
they could cupel 	I could be cupeling
you could be cupeling
she could be cupeling
we could be cupeling
you could be cupeling
they could be cupeling	I could have cupeled
you could have cupeled
she could have cupeled
we could have cupeled
you could have cupeled
they could have cupeled	I could have been cupeling
you could have been cupeling
she could have been cupeling
we could have been cupeling
you could have been cupeling
they could have been cupeling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't cupel
you couldn't cupel
she couldn't cupel
we couldn't cupel
you couldn't cupel
they couldn't cupel 	I couldn't be cupeling
you couldn't be cupeling
she couldn't be cupeling
we couldn't be cupeling
you couldn't be cupeling
they couldn't be cupeling	I couldn't have cupeled
you couldn't have cupeled
she couldn't have cupeled
we couldn't have cupeled
you couldn't have cupeled
they couldn't have cupeled	I couldn't have been cupeling
you couldn't have been cupeling
she couldn't have been cupeling
we couldn't have been cupeling
you couldn't have been cupeling
they couldn't have been cupeling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cupel?
could you cupel?
could she cupel?
could we cupel?
could you cupel?
could they cupel? 	could I be cupeling?
could you be cupeling?
could she be cupeling?
could we be cupeling?
could you be cupeling?
could they be cupeling? 	could I have cupeled?
could you have cupeled?
could she have cupeled?
could we have cupeled?
could you have cupeled?
could they have cupeled? 	could I have been cupeling?
could you have been cupeling?
could she have been cupeling?
could we have been cupeling?
could you have been cupeling?
could they have been cupeling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I cupel?
couldn't you cupel?
couldn't she cupel?
couldn't we cupel?
couldn't you cupel?
couldn't they cupel? 	couldn't I be cupeling?
couldn't you be cupeling?
couldn't she be cupeling?
couldn't we be cupeling?
couldn't you be cupeling?
couldn't they be cupeling? 	couldn't I have cupeled?
couldn't you have cupeled?
couldn't she have cupeled?
couldn't we have cupeled?
couldn't you have cupeled?
couldn't they have cupeled? 	couldn't I have been cupeling?
couldn't you have been cupeling?
couldn't she have been cupeling?
couldn't we have been cupeling?
couldn't you have been cupeling?
couldn't they have been cupeling?