English verb conjugation
CAN HELIOGRAPH

Regular verb: heliograph - heliographed - heliographed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?