could account
Verbo regular: account - accounted- accounted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could account
you could account
he could account
we could account
you could account
they could account 	I could be accounting
you could be accounting
he could be accounting
we could be accounting
you could be accounting
they could be accounting	I could have accounted
you could have accounted
he could have accounted
we could have accounted
you could have accounted
they could have accounted	I could have been accounting
you could have been accounting
he could have been accounting
we could have been accounting
you could have been accounting
they could have been accounting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not account
you could not account
he could not account
we could not account
you could not account
they could not account 	I could not be accounting
you could not be accounting
he could not be accounting
we could not be accounting
you could not be accounting
they could not be accounting	I could not have accounted
you could not have accounted
he could not have accounted
we could not have accounted
you could not have accounted
they could not have accounted	I could not have been accounting
you could not have been accounting
he could not have been accounting
we could not have been accounting
you could not have been accounting
they could not have been accounting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I account?
could you account?
could he account?
could we account?
could you account?
could they account? 	could I be accounting?
could you be accounting?
could he be accounting?
could we be accounting?
could you be accounting?
could they be accounting? 	could I have accounted?
could you have accounted?
could he have accounted?
could we have accounted?
could you have accounted?
could they have accounted? 	could I have been accounting?
could you have been accounting?
could he have been accounting?
could we have been accounting?
could you have been accounting?
could they have been accounting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not account?
could you not account?
could he not account?
could we not account?
could you not account?
could they not account? 	could I not be accounting?
could you not be accounting?
could he not be accounting?
could we not be accounting?
could you not be accounting?
could they not be accounting? 	could I not have accounted?
could you not have accounted?
could he not have accounted?
could we not have accounted?
could you not have accounted?
could they not have accounted? 	could I not have been accounting?
could you not have been accounting?
could he not have been accounting?
could we not have been accounting?
could you not have been accounting?
could they not have been accounting?