I can sew you can sew he can sew we can sew you can sew they can sew
V-ing form
I can be sewing you can be sewing he can be sewing we can be sewing you can be sewing they can be sewing
Perfect
I can have sewn you can have sewn he can have sewn we can have sewn you can have sewn they can have sewn
V-ing perfect
I can have been sewing you can have been sewing he can have been sewing we can have been sewing you can have been sewing they can have been sewing
Negation
Simple form
I can't sew you can't sew he can't sew we can't sew you can't sew they can't sew
V-ing form
I can't be sewing you can't be sewing he can't be sewing we can't be sewing you can't be sewing they can't be sewing
Perfect
I can't have sewn you can't have sewn he can't have sewn we can't have sewn you can't have sewn they can't have sewn
V-ing perfect
I can't have been sewing you can't have been sewing he can't have been sewing we can't have been sewing you can't have been sewing they can't have been sewing
Interrogative form
Simple form
can I sew? can you sew? can he sew? can we sew? can you sew? can they sew?
V-ing form
can I be sewing? can you be sewing? can he be sewing? can we be sewing? can you be sewing? can they be sewing?
Perfect
can I have sewn? can you have sewn? can he have sewn? can we have sewn? can you have sewn? can they have sewn?
V-ing perfect
can I have been sewing? can you have been sewing? can he have been sewing? can we have been sewing? can you have been sewing? can they have been sewing?
Interro-negative form
Simple form
can't I sew? can't you sew? can't he sew? can't we sew? can't you sew? can't they sew?
V-ing form
can't I be sewing? can't you be sewing? can't he be sewing? can't we be sewing? can't you be sewing? can't they be sewing?
Perfect
can't I have sewn? can't you have sewn? can't he have sewn? can't we have sewn? can't you have sewn? can't they have sewn?
V-ing perfect
can't I have been sewing? can't you have been sewing? can't he have been sewing? can't we have been sewing? can't you have been sewing? can't they have been sewing?