English verb conjugation
CAN ACHE

Regular verb: ache - ached - ached

Affirmation

Simple form	V-ing form
I can ache you can ache she can ache we can ache you can ache they can ache	I can be aching you can be aching she can be aching we can be aching you can be aching they can be aching
Perfect	V-ing perfect
I can have ached you can have ached she can have ached we can have ached you can have ached they can have ached	I can have been aching you can have been aching she can have been aching we can have been aching you can have been aching they can have been aching

Negation

Simple form	V-ing form
I cannot ache you cannot ache she cannot ache we cannot ache you cannot ache they cannot ache	I cannot be aching you cannot be aching she cannot be aching we cannot be aching you cannot be aching they cannot be aching
Perfect	V-ing perfect
I cannot have ached you cannot have ached she cannot have ached we cannot have ached you cannot have ached they cannot have ached	I cannot have been aching you cannot have been aching she cannot have been aching we cannot have been aching you cannot have been aching they cannot have been aching

Interrogative form

Simple form	V-ing form
can I ache? can you ache? can she ache? can we ache? can you ache? can they ache?	can I be aching? can you be aching? can she be aching? can we be aching? can you be aching? can they be aching?
Perfect	V-ing perfect
can I have ached? can you have ached? can she have ached? can we have ached? can you have ached? can they have ached?	can I have been aching? can you have been aching? can she have been aching? can we have been aching? can you have been aching? can they have been aching?

Interro-negative form

Simple form	V-ing form
can I not ache? can you not ache? can she not ache? can we not ache? can you not ache? can they not ache?	can I not be aching? can you not be aching? can she not be aching? can we not be aching? can you not be aching? can they not be aching?
Perfect	V-ing perfect
can I not have ached? can you not have ached? can she not have ached? can we not have ached? can you not have ached? can they not have ached?	can I not have been aching? can you not have been aching? can she not have been aching? can we not have been aching? can you not have been aching? can they not have been aching?