could forest
Regular verb: forest - forested- forested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could forest
you could forest
she could forest
we could forest
you could forest
they could forest 	I could be foresting
you could be foresting
she could be foresting
we could be foresting
you could be foresting
they could be foresting	I could have forested
you could have forested
she could have forested
we could have forested
you could have forested
they could have forested	I could have been foresting
you could have been foresting
she could have been foresting
we could have been foresting
you could have been foresting
they could have been foresting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't forest
you couldn't forest
she couldn't forest
we couldn't forest
you couldn't forest
they couldn't forest 	I couldn't be foresting
you couldn't be foresting
she couldn't be foresting
we couldn't be foresting
you couldn't be foresting
they couldn't be foresting	I couldn't have forested
you couldn't have forested
she couldn't have forested
we couldn't have forested
you couldn't have forested
they couldn't have forested	I couldn't have been foresting
you couldn't have been foresting
she couldn't have been foresting
we couldn't have been foresting
you couldn't have been foresting
they couldn't have been foresting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I forest?
could you forest?
could she forest?
could we forest?
could you forest?
could they forest? 	could I be foresting?
could you be foresting?
could she be foresting?
could we be foresting?
could you be foresting?
could they be foresting? 	could I have forested?
could you have forested?
could she have forested?
could we have forested?
could you have forested?
could they have forested? 	could I have been foresting?
could you have been foresting?
could she have been foresting?
could we have been foresting?
could you have been foresting?
could they have been foresting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I forest?
couldn't you forest?
couldn't she forest?
couldn't we forest?
couldn't you forest?
couldn't they forest? 	couldn't I be foresting?
couldn't you be foresting?
couldn't she be foresting?
couldn't we be foresting?
couldn't you be foresting?
couldn't they be foresting? 	couldn't I have forested?
couldn't you have forested?
couldn't she have forested?
couldn't we have forested?
couldn't you have forested?
couldn't they have forested? 	couldn't I have been foresting?
couldn't you have been foresting?
couldn't she have been foresting?
couldn't we have been foresting?
couldn't you have been foresting?
couldn't they have been foresting?