English verb conjugation
CAN COAL

Regular verb: coal - coaled - coaled

Affirmation

Simple form	V-ing form
I can coal you can coal he can coal we can coal you can coal they can coal	I can be coaling you can be coaling he can be coaling we can be coaling you can be coaling they can be coaling
Perfect	V-ing perfect
I can have coaled you can have coaled he can have coaled we can have coaled you can have coaled they can have coaled	I can have been coaling you can have been coaling he can have been coaling we can have been coaling you can have been coaling they can have been coaling

Negation

Simple form	V-ing form
I cannot coal you cannot coal he cannot coal we cannot coal you cannot coal they cannot coal	I cannot be coaling you cannot be coaling he cannot be coaling we cannot be coaling you cannot be coaling they cannot be coaling
Perfect	V-ing perfect
I cannot have coaled you cannot have coaled he cannot have coaled we cannot have coaled you cannot have coaled they cannot have coaled	I cannot have been coaling you cannot have been coaling he cannot have been coaling we cannot have been coaling you cannot have been coaling they cannot have been coaling

Interrogative form

Simple form	V-ing form
can I coal? can you coal? can he coal? can we coal? can you coal? can they coal?	can I be coaling? can you be coaling? can he be coaling? can we be coaling? can you be coaling? can they be coaling?
Perfect	V-ing perfect
can I have coaled? can you have coaled? can he have coaled? can we have coaled? can you have coaled? can they have coaled?	can I have been coaling? can you have been coaling? can he have been coaling? can we have been coaling? can you have been coaling? can they have been coaling?

Interro-negative form

Simple form	V-ing form
can I not coal? can you not coal? can he not coal? can we not coal? can you not coal? can they not coal?	can I not be coaling? can you not be coaling? can he not be coaling? can we not be coaling? can you not be coaling? can they not be coaling?
Perfect	V-ing perfect
can I not have coaled? can you not have coaled? can he not have coaled? can we not have coaled? can you not have coaled? can they not have coaled?	can I not have been coaling? can you not have been coaling? can he not have been coaling? can we not have been coaling? can you not have been coaling? can they not have been coaling?