English verb conjugation
CAN PRECOOK

Regular verb: precook - precooked - precooked

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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