English verb conjugation
COULD SPEARHEAD

Regular verb: spearhead - spearheaded - spearheaded

Affirmation

Simple form	V-ing form
I could spearhead you could spearhead he could spearhead we could spearhead you could spearhead they could spearhead	I could be spearheading you could be spearheading he could be spearheading we could be spearheading you could be spearheading they could be spearheading
Perfect	V-ing perfect
I could have spearheaded you could have spearheaded he could have spearheaded we could have spearheaded you could have spearheaded they could have spearheaded	I could have been spearheading you could have been spearheading he could have been spearheading we could have been spearheading you could have been spearheading they could have been spearheading

Negation

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

Interrogative form

Simple form	V-ing form
could I spearhead? could you spearhead? could he spearhead? could we spearhead? could you spearhead? could they spearhead?	could I be spearheading? could you be spearheading? could he be spearheading? could we be spearheading? could you be spearheading? could they be spearheading?
Perfect	V-ing perfect
could I have spearheaded? could you have spearheaded? could he have spearheaded? could we have spearheaded? could you have spearheaded? could they have spearheaded?	could I have been spearheading? could you have been spearheading? could he have been spearheading? could we have been spearheading? could you have been spearheading? could they have been spearheading?

Interro-negative form

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