could premarket
Regular verb: premarket - premarketed- premarketed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could premarket
you could premarket
he could premarket
we could premarket
you could premarket
they could premarket 	I could be premarketing
you could be premarketing
he could be premarketing
we could be premarketing
you could be premarketing
they could be premarketing	I could have premarketed
you could have premarketed
he could have premarketed
we could have premarketed
you could have premarketed
they could have premarketed	I could have been premarketing
you could have been premarketing
he could have been premarketing
we could have been premarketing
you could have been premarketing
they could have been premarketing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't premarket
you couldn't premarket
he couldn't premarket
we couldn't premarket
you couldn't premarket
they couldn't premarket 	I couldn't be premarketing
you couldn't be premarketing
he couldn't be premarketing
we couldn't be premarketing
you couldn't be premarketing
they couldn't be premarketing	I couldn't have premarketed
you couldn't have premarketed
he couldn't have premarketed
we couldn't have premarketed
you couldn't have premarketed
they couldn't have premarketed	I couldn't have been premarketing
you couldn't have been premarketing
he couldn't have been premarketing
we couldn't have been premarketing
you couldn't have been premarketing
they couldn't have been premarketing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I premarket?
could you premarket?
could he premarket?
could we premarket?
could you premarket?
could they premarket? 	could I be premarketing?
could you be premarketing?
could he be premarketing?
could we be premarketing?
could you be premarketing?
could they be premarketing? 	could I have premarketed?
could you have premarketed?
could he have premarketed?
could we have premarketed?
could you have premarketed?
could they have premarketed? 	could I have been premarketing?
could you have been premarketing?
could he have been premarketing?
could we have been premarketing?
could you have been premarketing?
could they have been premarketing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I premarket?
couldn't you premarket?
couldn't he premarket?
couldn't we premarket?
couldn't you premarket?
couldn't they premarket? 	couldn't I be premarketing?
couldn't you be premarketing?
couldn't he be premarketing?
couldn't we be premarketing?
couldn't you be premarketing?
couldn't they be premarketing? 	couldn't I have premarketed?
couldn't you have premarketed?
couldn't he have premarketed?
couldn't we have premarketed?
couldn't you have premarketed?
couldn't they have premarketed? 	couldn't I have been premarketing?
couldn't you have been premarketing?
couldn't he have been premarketing?
couldn't we have been premarketing?
couldn't you have been premarketing?
couldn't they have been premarketing?