could marinate
Regular verb: marinate - marinated- marinated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could marinate
you could marinate
she could marinate
we could marinate
you could marinate
they could marinate 	I could be marinating
you could be marinating
she could be marinating
we could be marinating
you could be marinating
they could be marinating	I could have marinated
you could have marinated
she could have marinated
we could have marinated
you could have marinated
they could have marinated	I could have been marinating
you could have been marinating
she could have been marinating
we could have been marinating
you could have been marinating
they could have been marinating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't marinate
you couldn't marinate
she couldn't marinate
we couldn't marinate
you couldn't marinate
they couldn't marinate 	I couldn't be marinating
you couldn't be marinating
she couldn't be marinating
we couldn't be marinating
you couldn't be marinating
they couldn't be marinating	I couldn't have marinated
you couldn't have marinated
she couldn't have marinated
we couldn't have marinated
you couldn't have marinated
they couldn't have marinated	I couldn't have been marinating
you couldn't have been marinating
she couldn't have been marinating
we couldn't have been marinating
you couldn't have been marinating
they couldn't have been marinating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I marinate?
could you marinate?
could she marinate?
could we marinate?
could you marinate?
could they marinate? 	could I be marinating?
could you be marinating?
could she be marinating?
could we be marinating?
could you be marinating?
could they be marinating? 	could I have marinated?
could you have marinated?
could she have marinated?
could we have marinated?
could you have marinated?
could they have marinated? 	could I have been marinating?
could you have been marinating?
could she have been marinating?
could we have been marinating?
could you have been marinating?
could they have been marinating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I marinate?
couldn't you marinate?
couldn't she marinate?
couldn't we marinate?
couldn't you marinate?
couldn't they marinate? 	couldn't I be marinating?
couldn't you be marinating?
couldn't she be marinating?
couldn't we be marinating?
couldn't you be marinating?
couldn't they be marinating? 	couldn't I have marinated?
couldn't you have marinated?
couldn't she have marinated?
couldn't we have marinated?
couldn't you have marinated?
couldn't they have marinated? 	couldn't I have been marinating?
couldn't you have been marinating?
couldn't she have been marinating?
couldn't we have been marinating?
couldn't you have been marinating?
couldn't they have been marinating?