could precook
Regular verb: precook - precooked- precooked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could precook
you could precook
he could precook
we could precook
you could precook
they could precook 	I could be precooking
you could be precooking
he could be precooking
we could be precooking
you could be precooking
they could be precooking	I could have precooked
you could have precooked
he could have precooked
we could have precooked
you could have precooked
they could have precooked	I could have been precooking
you could have been precooking
he could have been precooking
we could have been precooking
you could have been precooking
they could have been precooking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't precook
you couldn't precook
he couldn't precook
we couldn't precook
you couldn't precook
they couldn't precook 	I couldn't be precooking
you couldn't be precooking
he couldn't be precooking
we couldn't be precooking
you couldn't be precooking
they couldn't be precooking	I couldn't have precooked
you couldn't have precooked
he couldn't have precooked
we couldn't have precooked
you couldn't have precooked
they couldn't have precooked	I couldn't have been precooking
you couldn't have been precooking
he couldn't have been precooking
we couldn't have been precooking
you couldn't have been precooking
they couldn't have been precooking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I precook?
could you precook?
could he precook?
could we precook?
could you precook?
could they precook? 	could I be precooking?
could you be precooking?
could he be precooking?
could we be precooking?
could you be precooking?
could they be precooking? 	could I have precooked?
could you have precooked?
could he have precooked?
could we have precooked?
could you have precooked?
could they have precooked? 	could I have been precooking?
could you have been precooking?
could he have been precooking?
could we have been precooking?
could you have been precooking?
could they have been precooking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I precook?
couldn't you precook?
couldn't he precook?
couldn't we precook?
couldn't you precook?
couldn't they precook? 	couldn't I be precooking?
couldn't you be precooking?
couldn't he be precooking?
couldn't we be precooking?
couldn't you be precooking?
couldn't they be precooking? 	couldn't I have precooked?
couldn't you have precooked?
couldn't he have precooked?
couldn't we have precooked?
couldn't you have precooked?
couldn't they have precooked? 	couldn't I have been precooking?
couldn't you have been precooking?
couldn't he have been precooking?
couldn't we have been precooking?
couldn't you have been precooking?
couldn't they have been precooking?