must decode
Verbe régulier : decode - decoded- decoded
Traduction française : décoder - déchiffrer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must decode
you must decode
she must decode
we must decode
you must decode
they must decode 	I must be decoding
you must be decoding
she must be decoding
we must be decoding
you must be decoding
they must be decoding	I must have decoded
you must have decoded
she 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
she must have been decoding
we must have been decoding
you must have been decoding
they must have been decoding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't decode
you mustn't decode
she 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
she mustn't be decoding
we mustn't be decoding
you mustn't be decoding
they mustn't be decoding	I mustn't have decoded
you mustn't have decoded
she 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
she mustn't have been decoding
we mustn't have been decoding
you mustn't have been decoding
they mustn't have been decoding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I decode?
must you decode?
must she decode?
must we decode?
must you decode?
must they decode? 	must I be decoding?
must you be decoding?
must she be decoding?
must we be decoding?
must you be decoding?
must they be decoding? 	must I have decoded?
must you have decoded?
must she 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 she have been decoding?
must we have been decoding?
must you have been decoding?
must they have been decoding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I decode?
mustn't you decode?
mustn't she 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 she be decoding?
mustn't we be decoding?
mustn't you be decoding?
mustn't they be decoding? 	mustn't I have decoded?
mustn't you have decoded?
mustn't she 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 she have been decoding?
mustn't we have been decoding?
mustn't you have been decoding?
mustn't they have been decoding?