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 couldn't spearhead you couldn't spearhead he couldn't spearhead we couldn't spearhead you couldn't spearhead they couldn't spearhead	I couldn't be spearheading you couldn't be spearheading he couldn't be spearheading we couldn't be spearheading you couldn't be spearheading they couldn't be spearheading
Perfect	V-ing perfect
I couldn't have spearheaded you couldn't have spearheaded he couldn't have spearheaded we couldn't have spearheaded you couldn't have spearheaded they couldn't have spearheaded	I couldn't have been spearheading you couldn't have been spearheading he couldn't have been spearheading we couldn't have been spearheading you couldn't have been spearheading they couldn't 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
couldn't I spearhead? couldn't you spearhead? couldn't he spearhead? couldn't we spearhead? couldn't you spearhead? couldn't they spearhead?	couldn't I be spearheading? couldn't you be spearheading? couldn't he be spearheading? couldn't we be spearheading? couldn't you be spearheading? couldn't they be spearheading?
Perfect	V-ing perfect
couldn't I have spearheaded? couldn't you have spearheaded? couldn't he have spearheaded? couldn't we have spearheaded? couldn't you have spearheaded? couldn't they have spearheaded?	couldn't I have been spearheading? couldn't you have been spearheading? couldn't he have been spearheading? couldn't we have been spearheading? couldn't you have been spearheading? couldn't they have been spearheading?