can head
Regular verb: head - headed- headed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can head
you can head
she can head
we can head
you can head
they can head 	I can be heading
you can be heading
she can be heading
we can be heading
you can be heading
they can be heading	I can have headed
you can have headed
she can have headed
we can have headed
you can have headed
they can have headed	I can have been heading
you can have been heading
she can have been heading
we can have been heading
you can have been heading
they can have been heading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't head
you can't head
she can't head
we can't head
you can't head
they can't head 	I can't be heading
you can't be heading
she can't be heading
we can't be heading
you can't be heading
they can't be heading	I can't have headed
you can't have headed
she can't have headed
we can't have headed
you can't have headed
they can't have headed	I can't have been heading
you can't have been heading
she can't have been heading
we can't have been heading
you can't have been heading
they can't have been heading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I head?
can you head?
can she head?
can we head?
can you head?
can they head? 	can I be heading?
can you be heading?
can she be heading?
can we be heading?
can you be heading?
can they be heading? 	can I have headed?
can you have headed?
can she have headed?
can we have headed?
can you have headed?
can they have headed? 	can I have been heading?
can you have been heading?
can she have been heading?
can we have been heading?
can you have been heading?
can they have been heading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I head?
can't you head?
can't she head?
can't we head?
can't you head?
can't they head? 	can't I be heading?
can't you be heading?
can't she be heading?
can't we be heading?
can't you be heading?
can't they be heading? 	can't I have headed?
can't you have headed?
can't she have headed?
can't we have headed?
can't you have headed?
can't they have headed? 	can't I have been heading?
can't you have been heading?
can't she have been heading?
can't we have been heading?
can't you have been heading?
can't they have been heading?