could overdevelop
Regular verb: overdevelop - overdeveloped- overdeveloped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overdevelop
you could overdevelop
she could overdevelop
we could overdevelop
you could overdevelop
they could overdevelop 	I could be overdeveloping
you could be overdeveloping
she could be overdeveloping
we could be overdeveloping
you could be overdeveloping
they could be overdeveloping	I could have overdeveloped
you could have overdeveloped
she could have overdeveloped
we could have overdeveloped
you could have overdeveloped
they could have overdeveloped	I could have been overdeveloping
you could have been overdeveloping
she could have been overdeveloping
we could have been overdeveloping
you could have been overdeveloping
they could have been overdeveloping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overdevelop
you couldn't overdevelop
she couldn't overdevelop
we couldn't overdevelop
you couldn't overdevelop
they couldn't overdevelop 	I couldn't be overdeveloping
you couldn't be overdeveloping
she couldn't be overdeveloping
we couldn't be overdeveloping
you couldn't be overdeveloping
they couldn't be overdeveloping	I couldn't have overdeveloped
you couldn't have overdeveloped
she couldn't have overdeveloped
we couldn't have overdeveloped
you couldn't have overdeveloped
they couldn't have overdeveloped	I couldn't have been overdeveloping
you couldn't have been overdeveloping
she couldn't have been overdeveloping
we couldn't have been overdeveloping
you couldn't have been overdeveloping
they couldn't have been overdeveloping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overdevelop?
could you overdevelop?
could she overdevelop?
could we overdevelop?
could you overdevelop?
could they overdevelop? 	could I be overdeveloping?
could you be overdeveloping?
could she be overdeveloping?
could we be overdeveloping?
could you be overdeveloping?
could they be overdeveloping? 	could I have overdeveloped?
could you have overdeveloped?
could she have overdeveloped?
could we have overdeveloped?
could you have overdeveloped?
could they have overdeveloped? 	could I have been overdeveloping?
could you have been overdeveloping?
could she have been overdeveloping?
could we have been overdeveloping?
could you have been overdeveloping?
could they have been overdeveloping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overdevelop?
couldn't you overdevelop?
couldn't she overdevelop?
couldn't we overdevelop?
couldn't you overdevelop?
couldn't they overdevelop? 	couldn't I be overdeveloping?
couldn't you be overdeveloping?
couldn't she be overdeveloping?
couldn't we be overdeveloping?
couldn't you be overdeveloping?
couldn't they be overdeveloping? 	couldn't I have overdeveloped?
couldn't you have overdeveloped?
couldn't she have overdeveloped?
couldn't we have overdeveloped?
couldn't you have overdeveloped?
couldn't they have overdeveloped? 	couldn't I have been overdeveloping?
couldn't you have been overdeveloping?
couldn't she have been overdeveloping?
couldn't we have been overdeveloping?
couldn't you have been overdeveloping?
couldn't they have been overdeveloping?