English verb conjugation
MUST DECIPHER

Regular verb: decipher - deciphered - deciphered

Affirmation

Simple form	V-ing form
I must decipher you must decipher she must decipher we must decipher you must decipher they must decipher	I must be deciphering you must be deciphering she 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 she 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 she 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 she 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 she 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 she 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 she 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 she decipher? must we decipher? must you decipher? must they decipher?	must I be deciphering? must you be deciphering? must she 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 she 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 she 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 she 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 she 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 she 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 she have been deciphering? mustn't we have been deciphering? mustn't you have been deciphering? mustn't they have been deciphering?