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 cannot scar you cannot scar he cannot scar we cannot scar you cannot scar they cannot scar	I cannot be scarring you cannot be scarring he cannot be scarring we cannot be scarring you cannot be scarring they cannot be scarring
Perfect	V-ing perfect
I cannot have scarred you cannot have scarred he cannot have scarred we cannot have scarred you cannot have scarred they cannot have scarred	I cannot have been scarring you cannot have been scarring he cannot have been scarring we cannot have been scarring you cannot have been scarring they cannot 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 I not scar? can you not scar? can he not scar? can we not scar? can you not scar? can they not scar?	can I not be scarring? can you not be scarring? can he not be scarring? can we not be scarring? can you not be scarring? can they not be scarring?
Perfect	V-ing perfect
can I not have scarred? can you not have scarred? can he not have scarred? can we not have scarred? can you not have scarred? can they not have scarred?	can I not have been scarring? can you not have been scarring? can he not have been scarring? can we not have been scarring? can you not have been scarring? can they not have been scarring?