English verb conjugation
CAN DECIPHER

Regular verb: decipher - deciphered - deciphered

Affirmation

Simple form	V-ing form
I can decipher you can decipher he can decipher we can decipher you can decipher they can decipher	I can be deciphering you can be deciphering he can be deciphering we can be deciphering you can be deciphering they can be deciphering
Perfect	V-ing perfect
I can have deciphered you can have deciphered he can have deciphered we can have deciphered you can have deciphered they can have deciphered	I can have been deciphering you can have been deciphering he can have been deciphering we can have been deciphering you can have been deciphering they can have been deciphering

Negation

Simple form	V-ing form
I can't decipher you can't decipher he can't decipher we can't decipher you can't decipher they can't decipher	I can't be deciphering you can't be deciphering he can't be deciphering we can't be deciphering you can't be deciphering they can't be deciphering
Perfect	V-ing perfect
I can't have deciphered you can't have deciphered he can't have deciphered we can't have deciphered you can't have deciphered they can't have deciphered	I can't have been deciphering you can't have been deciphering he can't have been deciphering we can't have been deciphering you can't have been deciphering they can't have been deciphering

Interrogative form

Simple form	V-ing form
can I decipher? can you decipher? can he decipher? can we decipher? can you decipher? can they decipher?	can I be deciphering? can you be deciphering? can he be deciphering? can we be deciphering? can you be deciphering? can they be deciphering?
Perfect	V-ing perfect
can I have deciphered? can you have deciphered? can he have deciphered? can we have deciphered? can you have deciphered? can they have deciphered?	can I have been deciphering? can you have been deciphering? can he have been deciphering? can we have been deciphering? can you have been deciphering? can they have been deciphering?

Interro-negative form

Simple form	V-ing form
can't I decipher? can't you decipher? can't he decipher? can't we decipher? can't you decipher? can't they decipher?	can't I be deciphering? can't you be deciphering? can't he be deciphering? can't we be deciphering? can't you be deciphering? can't they be deciphering?
Perfect	V-ing perfect
can't I have deciphered? can't you have deciphered? can't he have deciphered? can't we have deciphered? can't you have deciphered? can't they have deciphered?	can't I have been deciphering? can't you have been deciphering? can't he have been deciphering? can't we have been deciphering? can't you have been deciphering? can't they have been deciphering?