English verb conjugation
COULD PRECOOK

Regular verb: precook - precooked - precooked

Affirmation

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