could coal
Regular verb: coal - coaled- coaled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could coal
you could coal
she could coal
we could coal
you could coal
they could coal 	I could be coaling
you could be coaling
she could be coaling
we could be coaling
you could be coaling
they could be coaling	I could have coaled
you could have coaled
she could have coaled
we could have coaled
you could have coaled
they could have coaled	I could have been coaling
you could have been coaling
she could have been coaling
we could have been coaling
you could have been coaling
they could have been coaling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't coal
you couldn't coal
she couldn't coal
we couldn't coal
you couldn't coal
they couldn't coal 	I couldn't be coaling
you couldn't be coaling
she couldn't be coaling
we couldn't be coaling
you couldn't be coaling
they couldn't be coaling	I couldn't have coaled
you couldn't have coaled
she couldn't have coaled
we couldn't have coaled
you couldn't have coaled
they couldn't have coaled	I couldn't have been coaling
you couldn't have been coaling
she couldn't have been coaling
we couldn't have been coaling
you couldn't have been coaling
they couldn't have been coaling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I coal?
could you coal?
could she coal?
could we coal?
could you coal?
could they coal? 	could I be coaling?
could you be coaling?
could she be coaling?
could we be coaling?
could you be coaling?
could they be coaling? 	could I have coaled?
could you have coaled?
could she have coaled?
could we have coaled?
could you have coaled?
could they have coaled? 	could I have been coaling?
could you have been coaling?
could she have been coaling?
could we have been coaling?
could you have been coaling?
could they have been coaling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I coal?
couldn't you coal?
couldn't she coal?
couldn't we coal?
couldn't you coal?
couldn't they coal? 	couldn't I be coaling?
couldn't you be coaling?
couldn't she be coaling?
couldn't we be coaling?
couldn't you be coaling?
couldn't they be coaling? 	couldn't I have coaled?
couldn't you have coaled?
couldn't she have coaled?
couldn't we have coaled?
couldn't you have coaled?
couldn't they have coaled? 	couldn't I have been coaling?
couldn't you have been coaling?
couldn't she have been coaling?
couldn't we have been coaling?
couldn't you have been coaling?
couldn't they have been coaling?