English verb conjugation
CAN CIPHER

Regular verb: cipher - ciphered - ciphered

Affirmation

Simple form	V-ing form
I can cipher you can cipher he can cipher we can cipher you can cipher they can cipher	I can be ciphering you can be ciphering he can be ciphering we can be ciphering you can be ciphering they can be ciphering
Perfect	V-ing perfect
I can have ciphered you can have ciphered he can have ciphered we can have ciphered you can have ciphered they can have ciphered	I can have been ciphering you can have been ciphering he can have been ciphering we can have been ciphering you can have been ciphering they can have been ciphering

Negation

Simple form	V-ing form
I cannot cipher you cannot cipher he cannot cipher we cannot cipher you cannot cipher they cannot cipher	I cannot be ciphering you cannot be ciphering he cannot be ciphering we cannot be ciphering you cannot be ciphering they cannot be ciphering
Perfect	V-ing perfect
I cannot have ciphered you cannot have ciphered he cannot have ciphered we cannot have ciphered you cannot have ciphered they cannot have ciphered	I cannot have been ciphering you cannot have been ciphering he cannot have been ciphering we cannot have been ciphering you cannot have been ciphering they cannot have been ciphering

Interrogative form

Simple form	V-ing form
can I cipher? can you cipher? can he cipher? can we cipher? can you cipher? can they cipher?	can I be ciphering? can you be ciphering? can he be ciphering? can we be ciphering? can you be ciphering? can they be ciphering?
Perfect	V-ing perfect
can I have ciphered? can you have ciphered? can he have ciphered? can we have ciphered? can you have ciphered? can they have ciphered?	can I have been ciphering? can you have been ciphering? can he have been ciphering? can we have been ciphering? can you have been ciphering? can they have been ciphering?

Interro-negative form

Simple form	V-ing form
can I not cipher? can you not cipher? can he not cipher? can we not cipher? can you not cipher? can they not cipher?	can I not be ciphering? can you not be ciphering? can he not be ciphering? can we not be ciphering? can you not be ciphering? can they not be ciphering?
Perfect	V-ing perfect
can I not have ciphered? can you not have ciphered? can he not have ciphered? can we not have ciphered? can you not have ciphered? can they not have ciphered?	can I not have been ciphering? can you not have been ciphering? can he not have been ciphering? can we not have been ciphering? can you not have been ciphering? can they not have been ciphering?