could wolf
Regular verb: wolf - wolfed- wolfed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could wolf
you could wolf
she could wolf
we could wolf
you could wolf
they could wolf 	I could be wolfing
you could be wolfing
she could be wolfing
we could be wolfing
you could be wolfing
they could be wolfing	I could have wolfed
you could have wolfed
she could have wolfed
we could have wolfed
you could have wolfed
they could have wolfed	I could have been wolfing
you could have been wolfing
she could have been wolfing
we could have been wolfing
you could have been wolfing
they could have been wolfing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't wolf
you couldn't wolf
she couldn't wolf
we couldn't wolf
you couldn't wolf
they couldn't wolf 	I couldn't be wolfing
you couldn't be wolfing
she couldn't be wolfing
we couldn't be wolfing
you couldn't be wolfing
they couldn't be wolfing	I couldn't have wolfed
you couldn't have wolfed
she couldn't have wolfed
we couldn't have wolfed
you couldn't have wolfed
they couldn't have wolfed	I couldn't have been wolfing
you couldn't have been wolfing
she couldn't have been wolfing
we couldn't have been wolfing
you couldn't have been wolfing
they couldn't have been wolfing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I wolf?
could you wolf?
could she wolf?
could we wolf?
could you wolf?
could they wolf? 	could I be wolfing?
could you be wolfing?
could she be wolfing?
could we be wolfing?
could you be wolfing?
could they be wolfing? 	could I have wolfed?
could you have wolfed?
could she have wolfed?
could we have wolfed?
could you have wolfed?
could they have wolfed? 	could I have been wolfing?
could you have been wolfing?
could she have been wolfing?
could we have been wolfing?
could you have been wolfing?
could they have been wolfing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I wolf?
couldn't you wolf?
couldn't she wolf?
couldn't we wolf?
couldn't you wolf?
couldn't they wolf? 	couldn't I be wolfing?
couldn't you be wolfing?
couldn't she be wolfing?
couldn't we be wolfing?
couldn't you be wolfing?
couldn't they be wolfing? 	couldn't I have wolfed?
couldn't you have wolfed?
couldn't she have wolfed?
couldn't we have wolfed?
couldn't you have wolfed?
couldn't they have wolfed? 	couldn't I have been wolfing?
couldn't you have been wolfing?
couldn't she have been wolfing?
couldn't we have been wolfing?
couldn't you have been wolfing?
couldn't they have been wolfing?