could fossilize
Verbo regular: fossilize - fossilized- fossilized

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could fossilize
you could fossilize
he could fossilize
we could fossilize
you could fossilize
they could fossilize 	I could be fossilizing
you could be fossilizing
he could be fossilizing
we could be fossilizing
you could be fossilizing
they could be fossilizing	I could have fossilized
you could have fossilized
he could have fossilized
we could have fossilized
you could have fossilized
they could have fossilized	I could have been fossilizing
you could have been fossilizing
he could have been fossilizing
we could have been fossilizing
you could have been fossilizing
they could have been fossilizing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't fossilize
you couldn't fossilize
he couldn't fossilize
we couldn't fossilize
you couldn't fossilize
they couldn't fossilize 	I couldn't be fossilizing
you couldn't be fossilizing
he couldn't be fossilizing
we couldn't be fossilizing
you couldn't be fossilizing
they couldn't be fossilizing	I couldn't have fossilized
you couldn't have fossilized
he couldn't have fossilized
we couldn't have fossilized
you couldn't have fossilized
they couldn't have fossilized	I couldn't have been fossilizing
you couldn't have been fossilizing
he couldn't have been fossilizing
we couldn't have been fossilizing
you couldn't have been fossilizing
they couldn't have been fossilizing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I fossilize?
could you fossilize?
could he fossilize?
could we fossilize?
could you fossilize?
could they fossilize? 	could I be fossilizing?
could you be fossilizing?
could he be fossilizing?
could we be fossilizing?
could you be fossilizing?
could they be fossilizing? 	could I have fossilized?
could you have fossilized?
could he have fossilized?
could we have fossilized?
could you have fossilized?
could they have fossilized? 	could I have been fossilizing?
could you have been fossilizing?
could he have been fossilizing?
could we have been fossilizing?
could you have been fossilizing?
could they have been fossilizing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I fossilize?
couldn't you fossilize?
couldn't he fossilize?
couldn't we fossilize?
couldn't you fossilize?
couldn't they fossilize? 	couldn't I be fossilizing?
couldn't you be fossilizing?
couldn't he be fossilizing?
couldn't we be fossilizing?
couldn't you be fossilizing?
couldn't they be fossilizing? 	couldn't I have fossilized?
couldn't you have fossilized?
couldn't he have fossilized?
couldn't we have fossilized?
couldn't you have fossilized?
couldn't they have fossilized? 	couldn't I have been fossilizing?
couldn't you have been fossilizing?
couldn't he have been fossilizing?
couldn't we have been fossilizing?
couldn't you have been fossilizing?
couldn't they have been fossilizing?