must spearhead
Verbe régulier : spearhead - spearheaded- spearheaded
Traduction française : être le fer de lance de - mener 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must spearhead
you must spearhead
she must spearhead
we must spearhead
you must spearhead
they must spearhead 	I must be spearheading
you must be spearheading
she must be spearheading
we must be spearheading
you must be spearheading
they must be spearheading	I must have spearheaded
you must have spearheaded
she must have spearheaded
we must have spearheaded
you must have spearheaded
they must have spearheaded	I must have been spearheading
you must have been spearheading
she must have been spearheading
we must have been spearheading
you must have been spearheading
they must have been spearheading	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't spearhead
you mustn't spearhead
she mustn't spearhead
we mustn't spearhead
you mustn't spearhead
they mustn't spearhead 	I mustn't be spearheading
you mustn't be spearheading
she mustn't be spearheading
we mustn't be spearheading
you mustn't be spearheading
they mustn't be spearheading	I mustn't have spearheaded
you mustn't have spearheaded
she mustn't have spearheaded
we mustn't have spearheaded
you mustn't have spearheaded
they mustn't have spearheaded	I mustn't have been spearheading
you mustn't have been spearheading
she mustn't have been spearheading
we mustn't have been spearheading
you mustn't have been spearheading
they mustn't have been spearheading	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I spearhead?
must you spearhead?
must she spearhead?
must we spearhead?
must you spearhead?
must they spearhead? 	must I be spearheading?
must you be spearheading?
must she be spearheading?
must we be spearheading?
must you be spearheading?
must they be spearheading? 	must I have spearheaded?
must you have spearheaded?
must she have spearheaded?
must we have spearheaded?
must you have spearheaded?
must they have spearheaded? 	must I have been spearheading?
must you have been spearheading?
must she have been spearheading?
must we have been spearheading?
must you have been spearheading?
must they have been spearheading? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I spearhead?
mustn't you spearhead?
mustn't she spearhead?
mustn't we spearhead?
mustn't you spearhead?
mustn't they spearhead? 	mustn't I be spearheading?
mustn't you be spearheading?
mustn't she be spearheading?
mustn't we be spearheading?
mustn't you be spearheading?
mustn't they be spearheading? 	mustn't I have spearheaded?
mustn't you have spearheaded?
mustn't she have spearheaded?
mustn't we have spearheaded?
mustn't you have spearheaded?
mustn't they have spearheaded? 	mustn't I have been spearheading?
mustn't you have been spearheading?
mustn't she have been spearheading?
mustn't we have been spearheading?
mustn't you have been spearheading?
mustn't they have been spearheading?