English verb conjugation
CAN AHEAD

Regular verb: ahead - aheaded - aheaded

Affirmation

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

Negation

Simple form	V-ing form
I can't ahead you can't ahead he can't ahead we can't ahead you can't ahead they can't ahead	I can't be aheading you can't be aheading he can't be aheading we can't be aheading you can't be aheading they can't be aheading
Perfect	V-ing perfect
I can't have aheaded you can't have aheaded he can't have aheaded we can't have aheaded you can't have aheaded they can't have aheaded	I can't have been aheading you can't have been aheading he can't have been aheading we can't have been aheading you can't have been aheading they can't have been aheading

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I ahead? can't you ahead? can't he ahead? can't we ahead? can't you ahead? can't they ahead?	can't I be aheading? can't you be aheading? can't he be aheading? can't we be aheading? can't you be aheading? can't they be aheading?
Perfect	V-ing perfect
can't I have aheaded? can't you have aheaded? can't he have aheaded? can't we have aheaded? can't you have aheaded? can't they have aheaded?	can't I have been aheading? can't you have been aheading? can't he have been aheading? can't we have been aheading? can't you have been aheading? can't they have been aheading?