English verb conjugation
CAN DARN

Regular verb: darn - darned - darned

Affirmation

Simple form	V-ing form
I can darn you can darn he can darn we can darn you can darn they can darn	I can be darning you can be darning he can be darning we can be darning you can be darning they can be darning
Perfect	V-ing perfect
I can have darned you can have darned he can have darned we can have darned you can have darned they can have darned	I can have been darning you can have been darning he can have been darning we can have been darning you can have been darning they can have been darning

Negation

Simple form	V-ing form
I cannot darn you cannot darn he cannot darn we cannot darn you cannot darn they cannot darn	I cannot be darning you cannot be darning he cannot be darning we cannot be darning you cannot be darning they cannot be darning
Perfect	V-ing perfect
I cannot have darned you cannot have darned he cannot have darned we cannot have darned you cannot have darned they cannot have darned	I cannot have been darning you cannot have been darning he cannot have been darning we cannot have been darning you cannot have been darning they cannot have been darning

Interrogative form

Simple form	V-ing form
can I darn? can you darn? can he darn? can we darn? can you darn? can they darn?	can I be darning? can you be darning? can he be darning? can we be darning? can you be darning? can they be darning?
Perfect	V-ing perfect
can I have darned? can you have darned? can he have darned? can we have darned? can you have darned? can they have darned?	can I have been darning? can you have been darning? can he have been darning? can we have been darning? can you have been darning? can they have been darning?

Interro-negative form

Simple form	V-ing form
can I not darn? can you not darn? can he not darn? can we not darn? can you not darn? can they not darn?	can I not be darning? can you not be darning? can he not be darning? can we not be darning? can you not be darning? can they not be darning?
Perfect	V-ing perfect
can I not have darned? can you not have darned? can he not have darned? can we not have darned? can you not have darned? can they not have darned?	can I not have been darning? can you not have been darning? can he not have been darning? can we not have been darning? can you not have been darning? can they not have been darning?