I'd be deciphering you'd be deciphering he'd be deciphering we'd be deciphering you'd be deciphering they'd be deciphering
Perfect
I should've deciphered you should've deciphered he should've deciphered we should've deciphered you should've deciphered they should've deciphered
V-ing perfect
I should've been deciphering you should've been deciphering he should've been deciphering we should've been deciphering you should've been deciphering they should've been deciphering
Negation
Simple form
I shouldn't decipher you shouldn't decipher he shouldn't decipher we shouldn't decipher you shouldn't decipher they shouldn't decipher
V-ing form
I shouldn't be deciphering you shouldn't be deciphering he shouldn't be deciphering we shouldn't be deciphering you shouldn't be deciphering they shouldn't be deciphering
Perfect
I shouldn't have deciphered you shouldn't have deciphered he shouldn't have deciphered we shouldn't have deciphered you shouldn't have deciphered they shouldn't have deciphered
V-ing perfect
I shouldn't have been deciphering you shouldn't have been deciphering he shouldn't have been deciphering we shouldn't have been deciphering you shouldn't have been deciphering they shouldn't have been deciphering
Interrogative form
Simple form
should I decipher? should you decipher? should he decipher? should we decipher? should you decipher? should they decipher?
V-ing form
should I be deciphering? should you be deciphering? should he be deciphering? should we be deciphering? should you be deciphering? should they be deciphering?
Perfect
should I have deciphered? should you have deciphered? should he have deciphered? should we have deciphered? should you have deciphered? should they have deciphered?
V-ing perfect
should I have been deciphering? should you have been deciphering? should he have been deciphering? should we have been deciphering? should you have been deciphering? should they have been deciphering?
Interro-negative form
Simple form
shouldn't I decipher? shouldn't you decipher? shouldn't he decipher? shouldn't we decipher? shouldn't you decipher? shouldn't they decipher?
V-ing form
shouldn't I be deciphering? shouldn't you be deciphering? shouldn't he be deciphering? shouldn't we be deciphering? shouldn't you be deciphering? shouldn't they be deciphering?
Perfect
shouldn't I have deciphered? shouldn't you have deciphered? shouldn't he have deciphered? shouldn't we have deciphered? shouldn't you have deciphered? shouldn't they have deciphered?
V-ing perfect
shouldn't I have been deciphering? shouldn't you have been deciphering? shouldn't he have been deciphering? shouldn't we have been deciphering? shouldn't you have been deciphering? shouldn't they have been deciphering?