must unclasp
Verbe régulier : unclasp - unclasped- unclasped
Traduction française : ouvrir - dégrafer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must unclasp
you must unclasp
he must unclasp
we must unclasp
you must unclasp
they must unclasp 	I must be unclasping
you must be unclasping
he must be unclasping
we must be unclasping
you must be unclasping
they must be unclasping	I must have unclasped
you must have unclasped
he must have unclasped
we must have unclasped
you must have unclasped
they must have unclasped	I must have been unclasping
you must have been unclasping
he must have been unclasping
we must have been unclasping
you must have been unclasping
they must have been unclasping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't unclasp
you mustn't unclasp
he mustn't unclasp
we mustn't unclasp
you mustn't unclasp
they mustn't unclasp 	I mustn't be unclasping
you mustn't be unclasping
he mustn't be unclasping
we mustn't be unclasping
you mustn't be unclasping
they mustn't be unclasping	I mustn't have unclasped
you mustn't have unclasped
he mustn't have unclasped
we mustn't have unclasped
you mustn't have unclasped
they mustn't have unclasped	I mustn't have been unclasping
you mustn't have been unclasping
he mustn't have been unclasping
we mustn't have been unclasping
you mustn't have been unclasping
they mustn't have been unclasping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I unclasp?
must you unclasp?
must he unclasp?
must we unclasp?
must you unclasp?
must they unclasp? 	must I be unclasping?
must you be unclasping?
must he be unclasping?
must we be unclasping?
must you be unclasping?
must they be unclasping? 	must I have unclasped?
must you have unclasped?
must he have unclasped?
must we have unclasped?
must you have unclasped?
must they have unclasped? 	must I have been unclasping?
must you have been unclasping?
must he have been unclasping?
must we have been unclasping?
must you have been unclasping?
must they have been unclasping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I unclasp?
mustn't you unclasp?
mustn't he unclasp?
mustn't we unclasp?
mustn't you unclasp?
mustn't they unclasp? 	mustn't I be unclasping?
mustn't you be unclasping?
mustn't he be unclasping?
mustn't we be unclasping?
mustn't you be unclasping?
mustn't they be unclasping? 	mustn't I have unclasped?
mustn't you have unclasped?
mustn't he have unclasped?
mustn't we have unclasped?
mustn't you have unclasped?
mustn't they have unclasped? 	mustn't I have been unclasping?
mustn't you have been unclasping?
mustn't he have been unclasping?
mustn't we have been unclasping?
mustn't you have been unclasping?
mustn't they have been unclasping?