English verb conjugation
COULD AHEAD

Regular verb: ahead - aheaded - aheaded

Affirmation

Simple form	V-ing form
I could ahead you could ahead he could ahead we could ahead you could ahead they could ahead	I could be aheading you could be aheading he could be aheading we could be aheading you could be aheading they could be aheading
Perfect	V-ing perfect
I could have aheaded you could have aheaded he could have aheaded we could have aheaded you could have aheaded they could have aheaded	I could have been aheading you could have been aheading he could have been aheading we could have been aheading you could have been aheading they could have been aheading

Negation

Simple form	V-ing form
I could not ahead you could not ahead he could not ahead we could not ahead you could not ahead they could not ahead	I could not be aheading you could not be aheading he could not be aheading we could not be aheading you could not be aheading they could not be aheading
Perfect	V-ing perfect
I could not have aheaded you could not have aheaded he could not have aheaded we could not have aheaded you could not have aheaded they could not have aheaded	I could not have been aheading you could not have been aheading he could not have been aheading we could not have been aheading you could not have been aheading they could not have been aheading

Interrogative form

Simple form	V-ing form
could I ahead? could you ahead? could he ahead? could we ahead? could you ahead? could they ahead?	could I be aheading? could you be aheading? could he be aheading? could we be aheading? could you be aheading? could they be aheading?
Perfect	V-ing perfect
could I have aheaded? could you have aheaded? could he have aheaded? could we have aheaded? could you have aheaded? could they have aheaded?	could I have been aheading? could you have been aheading? could he have been aheading? could we have been aheading? could you have been aheading? could they have been aheading?

Interro-negative form

Simple form	V-ing form
could I not ahead? could you not ahead? could he not ahead? could we not ahead? could you not ahead? could they not ahead?	could I not be aheading? could you not be aheading? could he not be aheading? could we not be aheading? could you not be aheading? could they not be aheading?
Perfect	V-ing perfect
could I not have aheaded? could you not have aheaded? could he not have aheaded? could we not have aheaded? could you not have aheaded? could they not have aheaded?	could I not have been aheading? could you not have been aheading? could he not have been aheading? could we not have been aheading? could you not have been aheading? could they not have been aheading?