could frock
Verbo regular: frock - frocked- frocked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could frock
you could frock
he could frock
we could frock
you could frock
they could frock 	I could be frocking
you could be frocking
he could be frocking
we could be frocking
you could be frocking
they could be frocking	I could have frocked
you could have frocked
he could have frocked
we could have frocked
you could have frocked
they could have frocked	I could have been frocking
you could have been frocking
he could have been frocking
we could have been frocking
you could have been frocking
they could have been frocking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not frock
you could not frock
he could not frock
we could not frock
you could not frock
they could not frock 	I could not be frocking
you could not be frocking
he could not be frocking
we could not be frocking
you could not be frocking
they could not be frocking	I could not have frocked
you could not have frocked
he could not have frocked
we could not have frocked
you could not have frocked
they could not have frocked	I could not have been frocking
you could not have been frocking
he could not have been frocking
we could not have been frocking
you could not have been frocking
they could not have been frocking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I frock?
could you frock?
could he frock?
could we frock?
could you frock?
could they frock? 	could I be frocking?
could you be frocking?
could he be frocking?
could we be frocking?
could you be frocking?
could they be frocking? 	could I have frocked?
could you have frocked?
could he have frocked?
could we have frocked?
could you have frocked?
could they have frocked? 	could I have been frocking?
could you have been frocking?
could he have been frocking?
could we have been frocking?
could you have been frocking?
could they have been frocking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not frock?
could you not frock?
could he not frock?
could we not frock?
could you not frock?
could they not frock? 	could I not be frocking?
could you not be frocking?
could he not be frocking?
could we not be frocking?
could you not be frocking?
could they not be frocking? 	could I not have frocked?
could you not have frocked?
could he not have frocked?
could we not have frocked?
could you not have frocked?
could they not have frocked? 	could I not have been frocking?
could you not have been frocking?
could he not have been frocking?
could we not have been frocking?
could you not have been frocking?
could they not have been frocking?