could leave
Irregular verb: leave - left- left

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could leave
you could leave
she could leave
we could leave
you could leave
they could leave 	I could be leaving
you could be leaving
she could be leaving
we could be leaving
you could be leaving
they could be leaving	I could have left
you could have left
she could have left
we could have left
you could have left
they could have left	I could have been leaving
you could have been leaving
she could have been leaving
we could have been leaving
you could have been leaving
they could have been leaving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't leave
you couldn't leave
she couldn't leave
we couldn't leave
you couldn't leave
they couldn't leave 	I couldn't be leaving
you couldn't be leaving
she couldn't be leaving
we couldn't be leaving
you couldn't be leaving
they couldn't be leaving	I couldn't have left
you couldn't have left
she couldn't have left
we couldn't have left
you couldn't have left
they couldn't have left	I couldn't have been leaving
you couldn't have been leaving
she couldn't have been leaving
we couldn't have been leaving
you couldn't have been leaving
they couldn't have been leaving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I leave?
could you leave?
could she leave?
could we leave?
could you leave?
could they leave? 	could I be leaving?
could you be leaving?
could she be leaving?
could we be leaving?
could you be leaving?
could they be leaving? 	could I have left?
could you have left?
could she have left?
could we have left?
could you have left?
could they have left? 	could I have been leaving?
could you have been leaving?
could she have been leaving?
could we have been leaving?
could you have been leaving?
could they have been leaving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I leave?
couldn't you leave?
couldn't she leave?
couldn't we leave?
couldn't you leave?
couldn't they leave? 	couldn't I be leaving?
couldn't you be leaving?
couldn't she be leaving?
couldn't we be leaving?
couldn't you be leaving?
couldn't they be leaving? 	couldn't I have left?
couldn't you have left?
couldn't she have left?
couldn't we have left?
couldn't you have left?
couldn't they have left? 	couldn't I have been leaving?
couldn't you have been leaving?
couldn't she have been leaving?
couldn't we have been leaving?
couldn't you have been leaving?
couldn't they have been leaving?