could fray
Verbo regular: fray - frayed- frayed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could fray
you could fray
he could fray
we could fray
you could fray
they could fray 	I could be fraying
you could be fraying
he could be fraying
we could be fraying
you could be fraying
they could be fraying	I could have frayed
you could have frayed
he could have frayed
we could have frayed
you could have frayed
they could have frayed	I could have been fraying
you could have been fraying
he could have been fraying
we could have been fraying
you could have been fraying
they could have been fraying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't fray
you couldn't fray
he couldn't fray
we couldn't fray
you couldn't fray
they couldn't fray 	I couldn't be fraying
you couldn't be fraying
he couldn't be fraying
we couldn't be fraying
you couldn't be fraying
they couldn't be fraying	I couldn't have frayed
you couldn't have frayed
he couldn't have frayed
we couldn't have frayed
you couldn't have frayed
they couldn't have frayed	I couldn't have been fraying
you couldn't have been fraying
he couldn't have been fraying
we couldn't have been fraying
you couldn't have been fraying
they couldn't have been fraying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I fray?
could you fray?
could he fray?
could we fray?
could you fray?
could they fray? 	could I be fraying?
could you be fraying?
could he be fraying?
could we be fraying?
could you be fraying?
could they be fraying? 	could I have frayed?
could you have frayed?
could he have frayed?
could we have frayed?
could you have frayed?
could they have frayed? 	could I have been fraying?
could you have been fraying?
could he have been fraying?
could we have been fraying?
could you have been fraying?
could they have been fraying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I fray?
couldn't you fray?
couldn't he fray?
couldn't we fray?
couldn't you fray?
couldn't they fray? 	couldn't I be fraying?
couldn't you be fraying?
couldn't he be fraying?
couldn't we be fraying?
couldn't you be fraying?
couldn't they be fraying? 	couldn't I have frayed?
couldn't you have frayed?
couldn't he have frayed?
couldn't we have frayed?
couldn't you have frayed?
couldn't they have frayed? 	couldn't I have been fraying?
couldn't you have been fraying?
couldn't he have been fraying?
couldn't we have been fraying?
couldn't you have been fraying?
couldn't they have been fraying?