could coat
Regular verb: coat - coated- coated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could coat
you could coat
she could coat
we could coat
you could coat
they could coat 	I could be coating
you could be coating
she could be coating
we could be coating
you could be coating
they could be coating	I could have coated
you could have coated
she could have coated
we could have coated
you could have coated
they could have coated	I could have been coating
you could have been coating
she could have been coating
we could have been coating
you could have been coating
they could have been coating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't coat
you couldn't coat
she couldn't coat
we couldn't coat
you couldn't coat
they couldn't coat 	I couldn't be coating
you couldn't be coating
she couldn't be coating
we couldn't be coating
you couldn't be coating
they couldn't be coating	I couldn't have coated
you couldn't have coated
she couldn't have coated
we couldn't have coated
you couldn't have coated
they couldn't have coated	I couldn't have been coating
you couldn't have been coating
she couldn't have been coating
we couldn't have been coating
you couldn't have been coating
they couldn't have been coating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I coat?
could you coat?
could she coat?
could we coat?
could you coat?
could they coat? 	could I be coating?
could you be coating?
could she be coating?
could we be coating?
could you be coating?
could they be coating? 	could I have coated?
could you have coated?
could she have coated?
could we have coated?
could you have coated?
could they have coated? 	could I have been coating?
could you have been coating?
could she have been coating?
could we have been coating?
could you have been coating?
could they have been coating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I coat?
couldn't you coat?
couldn't she coat?
couldn't we coat?
couldn't you coat?
couldn't they coat? 	couldn't I be coating?
couldn't you be coating?
couldn't she be coating?
couldn't we be coating?
couldn't you be coating?
couldn't they be coating? 	couldn't I have coated?
couldn't you have coated?
couldn't she have coated?
couldn't we have coated?
couldn't you have coated?
couldn't they have coated? 	couldn't I have been coating?
couldn't you have been coating?
couldn't she have been coating?
couldn't we have been coating?
couldn't you have been coating?
couldn't they have been coating?