English verb conjugation
MUST DECIPHER

Regular verb: decipher - deciphered - deciphered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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