English verb conjugation
MUST DECODE

Regular verb: decode - decoded - decoded

Affirmation

Simple form	V-ing form
I must decode you must decode he must decode we must decode you must decode they must decode	I must be decoding you must be decoding he must be decoding we must be decoding you must be decoding they must be decoding
Perfect	V-ing perfect
I must have decoded you must have decoded he must have decoded we must have decoded you must have decoded they must have decoded	I must have been decoding you must have been decoding he must have been decoding we must have been decoding you must have been decoding they must have been decoding

Negation

Simple form	V-ing form
I mustn't decode you mustn't decode he mustn't decode we mustn't decode you mustn't decode they mustn't decode	I mustn't be decoding you mustn't be decoding he mustn't be decoding we mustn't be decoding you mustn't be decoding they mustn't be decoding
Perfect	V-ing perfect
I mustn't have decoded you mustn't have decoded he mustn't have decoded we mustn't have decoded you mustn't have decoded they mustn't have decoded	I mustn't have been decoding you mustn't have been decoding he mustn't have been decoding we mustn't have been decoding you mustn't have been decoding they mustn't have been decoding

Interrogative form

Simple form	V-ing form
must I decode? must you decode? must he decode? must we decode? must you decode? must they decode?	must I be decoding? must you be decoding? must he be decoding? must we be decoding? must you be decoding? must they be decoding?
Perfect	V-ing perfect
must I have decoded? must you have decoded? must he have decoded? must we have decoded? must you have decoded? must they have decoded?	must I have been decoding? must you have been decoding? must he have been decoding? must we have been decoding? must you have been decoding? must they have been decoding?

Interro-negative form

Simple form	V-ing form
mustn't I decode? mustn't you decode? mustn't he decode? mustn't we decode? mustn't you decode? mustn't they decode?	mustn't I be decoding? mustn't you be decoding? mustn't he be decoding? mustn't we be decoding? mustn't you be decoding? mustn't they be decoding?
Perfect	V-ing perfect
mustn't I have decoded? mustn't you have decoded? mustn't he have decoded? mustn't we have decoded? mustn't you have decoded? mustn't they have decoded?	mustn't I have been decoding? mustn't you have been decoding? mustn't he have been decoding? mustn't we have been decoding? mustn't you have been decoding? mustn't they have been decoding?