English verb conjugation
CAN STEP

Regular verb: step - stepped - stepped

Affirmation

Simple form	V-ing form
I can step you can step she can step we can step you can step they can step	I can be stepping you can be stepping she can be stepping we can be stepping you can be stepping they can be stepping
Perfect	V-ing perfect
I can have stepped you can have stepped she can have stepped we can have stepped you can have stepped they can have stepped	I can have been stepping you can have been stepping she can have been stepping we can have been stepping you can have been stepping they can have been stepping

Negation

Simple form	V-ing form
I cannot step you cannot step she cannot step we cannot step you cannot step they cannot step	I cannot be stepping you cannot be stepping she cannot be stepping we cannot be stepping you cannot be stepping they cannot be stepping
Perfect	V-ing perfect
I cannot have stepped you cannot have stepped she cannot have stepped we cannot have stepped you cannot have stepped they cannot have stepped	I cannot have been stepping you cannot have been stepping she cannot have been stepping we cannot have been stepping you cannot have been stepping they cannot have been stepping

Interrogative form

Simple form	V-ing form
can I step? can you step? can she step? can we step? can you step? can they step?	can I be stepping? can you be stepping? can she be stepping? can we be stepping? can you be stepping? can they be stepping?
Perfect	V-ing perfect
can I have stepped? can you have stepped? can she have stepped? can we have stepped? can you have stepped? can they have stepped?	can I have been stepping? can you have been stepping? can she have been stepping? can we have been stepping? can you have been stepping? can they have been stepping?

Interro-negative form

Simple form	V-ing form
can I not step? can you not step? can she not step? can we not step? can you not step? can they not step?	can I not be stepping? can you not be stepping? can she not be stepping? can we not be stepping? can you not be stepping? can they not be stepping?
Perfect	V-ing perfect
can I not have stepped? can you not have stepped? can she not have stepped? can we not have stepped? can you not have stepped? can they not have stepped?	can I not have been stepping? can you not have been stepping? can she not have been stepping? can we not have been stepping? can you not have been stepping? can they not have been stepping?