could heliograph
Verbo regular: heliograph - heliographed- heliographed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could heliograph
you could heliograph
he could heliograph
we could heliograph
you could heliograph
they could heliograph 	I could be heliographing
you could be heliographing
he could be heliographing
we could be heliographing
you could be heliographing
they could be heliographing	I could have heliographed
you could have heliographed
he could have heliographed
we could have heliographed
you could have heliographed
they could have heliographed	I could have been heliographing
you could have been heliographing
he could have been heliographing
we could have been heliographing
you could have been heliographing
they could have been heliographing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not heliograph
you could not heliograph
he could not heliograph
we could not heliograph
you could not heliograph
they could not heliograph 	I could not be heliographing
you could not be heliographing
he could not be heliographing
we could not be heliographing
you could not be heliographing
they could not be heliographing	I could not have heliographed
you could not have heliographed
he could not have heliographed
we could not have heliographed
you could not have heliographed
they could not have heliographed	I could not have been heliographing
you could not have been heliographing
he could not have been heliographing
we could not have been heliographing
you could not have been heliographing
they could not have been heliographing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I heliograph?
could you heliograph?
could he heliograph?
could we heliograph?
could you heliograph?
could they heliograph? 	could I be heliographing?
could you be heliographing?
could he be heliographing?
could we be heliographing?
could you be heliographing?
could they be heliographing? 	could I have heliographed?
could you have heliographed?
could he have heliographed?
could we have heliographed?
could you have heliographed?
could they have heliographed? 	could I have been heliographing?
could you have been heliographing?
could he have been heliographing?
could we have been heliographing?
could you have been heliographing?
could they have been heliographing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not heliograph?
could you not heliograph?
could he not heliograph?
could we not heliograph?
could you not heliograph?
could they not heliograph? 	could I not be heliographing?
could you not be heliographing?
could he not be heliographing?
could we not be heliographing?
could you not be heliographing?
could they not be heliographing? 	could I not have heliographed?
could you not have heliographed?
could he not have heliographed?
could we not have heliographed?
could you not have heliographed?
could they not have heliographed? 	could I not have been heliographing?
could you not have been heliographing?
could he not have been heliographing?
could we not have been heliographing?
could you not have been heliographing?
could they not have been heliographing?