must spec
Verbe régulier : spec - speced- speced

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must spec
you must spec
he must spec
we must spec
you must spec
they must spec 	I must be specing
you must be specing
he must be specing
we must be specing
you must be specing
they must be specing	I must have speced
you must have speced
he must have speced
we must have speced
you must have speced
they must have speced	I must have been specing
you must have been specing
he must have been specing
we must have been specing
you must have been specing
they must have been specing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't spec
you mustn't spec
he mustn't spec
we mustn't spec
you mustn't spec
they mustn't spec 	I mustn't be specing
you mustn't be specing
he mustn't be specing
we mustn't be specing
you mustn't be specing
they mustn't be specing	I mustn't have speced
you mustn't have speced
he mustn't have speced
we mustn't have speced
you mustn't have speced
they mustn't have speced	I mustn't have been specing
you mustn't have been specing
he mustn't have been specing
we mustn't have been specing
you mustn't have been specing
they mustn't have been specing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I spec?
must you spec?
must he spec?
must we spec?
must you spec?
must they spec? 	must I be specing?
must you be specing?
must he be specing?
must we be specing?
must you be specing?
must they be specing? 	must I have speced?
must you have speced?
must he have speced?
must we have speced?
must you have speced?
must they have speced? 	must I have been specing?
must you have been specing?
must he have been specing?
must we have been specing?
must you have been specing?
must they have been specing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I spec?
mustn't you spec?
mustn't he spec?
mustn't we spec?
mustn't you spec?
mustn't they spec? 	mustn't I be specing?
mustn't you be specing?
mustn't he be specing?
mustn't we be specing?
mustn't you be specing?
mustn't they be specing? 	mustn't I have speced?
mustn't you have speced?
mustn't he have speced?
mustn't we have speced?
mustn't you have speced?
mustn't they have speced? 	mustn't I have been specing?
mustn't you have been specing?
mustn't he have been specing?
mustn't we have been specing?
mustn't you have been specing?
mustn't they have been specing?