could ban
Verbo regular: ban - banned- banned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could ban
you could ban
he could ban
we could ban
you could ban
they could ban 	I could be banning
you could be banning
he could be banning
we could be banning
you could be banning
they could be banning	I could have banned
you could have banned
he could have banned
we could have banned
you could have banned
they could have banned	I could have been banning
you could have been banning
he could have been banning
we could have been banning
you could have been banning
they could have been banning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't ban
you couldn't ban
he couldn't ban
we couldn't ban
you couldn't ban
they couldn't ban 	I couldn't be banning
you couldn't be banning
he couldn't be banning
we couldn't be banning
you couldn't be banning
they couldn't be banning	I couldn't have banned
you couldn't have banned
he couldn't have banned
we couldn't have banned
you couldn't have banned
they couldn't have banned	I couldn't have been banning
you couldn't have been banning
he couldn't have been banning
we couldn't have been banning
you couldn't have been banning
they couldn't have been banning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I ban?
could you ban?
could he ban?
could we ban?
could you ban?
could they ban? 	could I be banning?
could you be banning?
could he be banning?
could we be banning?
could you be banning?
could they be banning? 	could I have banned?
could you have banned?
could he have banned?
could we have banned?
could you have banned?
could they have banned? 	could I have been banning?
could you have been banning?
could he have been banning?
could we have been banning?
could you have been banning?
could they have been banning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I ban?
couldn't you ban?
couldn't he ban?
couldn't we ban?
couldn't you ban?
couldn't they ban? 	couldn't I be banning?
couldn't you be banning?
couldn't he be banning?
couldn't we be banning?
couldn't you be banning?
couldn't they be banning? 	couldn't I have banned?
couldn't you have banned?
couldn't he have banned?
couldn't we have banned?
couldn't you have banned?
couldn't they have banned? 	couldn't I have been banning?
couldn't you have been banning?
couldn't he have been banning?
couldn't we have been banning?
couldn't you have been banning?
couldn't they have been banning?