English verb conjugation
MUST SPEARHEAD

Regular verb: spearhead - spearheaded - spearheaded

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
I must not spearhead you must not spearhead she must not spearhead we must not spearhead you must not spearhead they must not spearhead	I must not be spearheading you must not be spearheading she must not be spearheading we must not be spearheading you must not be spearheading they must not be spearheading
Perfect	V-ing perfect
I must not have spearheaded you must not have spearheaded she must not have spearheaded we must not have spearheaded you must not have spearheaded they must not have spearheaded	I must not have been spearheading you must not have been spearheading she must not have been spearheading we must not have been spearheading you must not have been spearheading they must not have been spearheading

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
must I not spearhead? must you not spearhead? must she not spearhead? must we not spearhead? must you not spearhead? must they not spearhead?	must I not be spearheading? must you not be spearheading? must she not be spearheading? must we not be spearheading? must you not be spearheading? must they not be spearheading?
Perfect	V-ing perfect
must I not have spearheaded? must you not have spearheaded? must she not have spearheaded? must we not have spearheaded? must you not have spearheaded? must they not have spearheaded?	must I not have been spearheading? must you not have been spearheading? must she not have been spearheading? must we not have been spearheading? must you not have been spearheading? must they not have been spearheading?