can heliograph
Regular verb: heliograph - heliographed- heliographed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can heliograph
you can heliograph
he can heliograph
we can heliograph
you can heliograph
they can heliograph 	I can be heliographing
you can be heliographing
he can be heliographing
we can be heliographing
you can be heliographing
they can be heliographing	I can have heliographed
you can have heliographed
he can have heliographed
we can have heliographed
you can have heliographed
they can have heliographed	I can have been heliographing
you can have been heliographing
he can have been heliographing
we can have been heliographing
you can have been heliographing
they can have been heliographing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't heliograph
you can't heliograph
he can't heliograph
we can't heliograph
you can't heliograph
they can't heliograph 	I can't be heliographing
you can't be heliographing
he can't be heliographing
we can't be heliographing
you can't be heliographing
they can't be heliographing	I can't have heliographed
you can't have heliographed
he can't have heliographed
we can't have heliographed
you can't have heliographed
they can't have heliographed	I can't have been heliographing
you can't have been heliographing
he can't have been heliographing
we can't have been heliographing
you can't have been heliographing
they can't have been heliographing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I heliograph?
can you heliograph?
can he heliograph?
can we heliograph?
can you heliograph?
can they heliograph? 	can I be heliographing?
can you be heliographing?
can he be heliographing?
can we be heliographing?
can you be heliographing?
can they be heliographing? 	can I have heliographed?
can you have heliographed?
can he have heliographed?
can we have heliographed?
can you have heliographed?
can they have heliographed? 	can I have been heliographing?
can you have been heliographing?
can he have been heliographing?
can we have been heliographing?
can you have been heliographing?
can they have been heliographing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I heliograph?
can't you heliograph?
can't he heliograph?
can't we heliograph?
can't you heliograph?
can't they heliograph? 	can't I be heliographing?
can't you be heliographing?
can't he be heliographing?
can't we be heliographing?
can't you be heliographing?
can't they be heliographing? 	can't I have heliographed?
can't you have heliographed?
can't he have heliographed?
can't we have heliographed?
can't you have heliographed?
can't they have heliographed? 	can't I have been heliographing?
can't you have been heliographing?
can't he have been heliographing?
can't we have been heliographing?
can't you have been heliographing?
can't they have been heliographing?