English verb conjugation
CAN SPEARHEAD

Regular verb: spearhead - spearheaded - spearheaded

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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