English verb conjugation
CAN SCAR

Regular verb: scar - scarred - scarred

Affirmation

Simple form	V-ing form
I can scar you can scar he can scar we can scar you can scar they can scar	I can be scarring you can be scarring he can be scarring we can be scarring you can be scarring they can be scarring
Perfect	V-ing perfect
I can have scarred you can have scarred he can have scarred we can have scarred you can have scarred they can have scarred	I can have been scarring you can have been scarring he can have been scarring we can have been scarring you can have been scarring they can have been scarring

Negation

Simple form	V-ing form
I can't scar you can't scar he can't scar we can't scar you can't scar they can't scar	I can't be scarring you can't be scarring he can't be scarring we can't be scarring you can't be scarring they can't be scarring
Perfect	V-ing perfect
I can't have scarred you can't have scarred he can't have scarred we can't have scarred you can't have scarred they can't have scarred	I can't have been scarring you can't have been scarring he can't have been scarring we can't have been scarring you can't have been scarring they can't have been scarring

Interrogative form

Simple form	V-ing form
can I scar? can you scar? can he scar? can we scar? can you scar? can they scar?	can I be scarring? can you be scarring? can he be scarring? can we be scarring? can you be scarring? can they be scarring?
Perfect	V-ing perfect
can I have scarred? can you have scarred? can he have scarred? can we have scarred? can you have scarred? can they have scarred?	can I have been scarring? can you have been scarring? can he have been scarring? can we have been scarring? can you have been scarring? can they have been scarring?

Interro-negative form

Simple form	V-ing form
can't I scar? can't you scar? can't he scar? can't we scar? can't you scar? can't they scar?	can't I be scarring? can't you be scarring? can't he be scarring? can't we be scarring? can't you be scarring? can't they be scarring?
Perfect	V-ing perfect
can't I have scarred? can't you have scarred? can't he have scarred? can't we have scarred? can't you have scarred? can't they have scarred?	can't I have been scarring? can't you have been scarring? can't he have been scarring? can't we have been scarring? can't you have been scarring? can't they have been scarring?