could bank
Verbo regular: bank - banked- banked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could bank
you could bank
she could bank
we could bank
you could bank
they could bank 	I could be banking
you could be banking
she could be banking
we could be banking
you could be banking
they could be banking	I could have banked
you could have banked
she could have banked
we could have banked
you could have banked
they could have banked	I could have been banking
you could have been banking
she could have been banking
we could have been banking
you could have been banking
they could have been banking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't bank
you couldn't bank
she couldn't bank
we couldn't bank
you couldn't bank
they couldn't bank 	I couldn't be banking
you couldn't be banking
she couldn't be banking
we couldn't be banking
you couldn't be banking
they couldn't be banking	I couldn't have banked
you couldn't have banked
she couldn't have banked
we couldn't have banked
you couldn't have banked
they couldn't have banked	I couldn't have been banking
you couldn't have been banking
she couldn't have been banking
we couldn't have been banking
you couldn't have been banking
they couldn't have been banking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I bank?
could you bank?
could she bank?
could we bank?
could you bank?
could they bank? 	could I be banking?
could you be banking?
could she be banking?
could we be banking?
could you be banking?
could they be banking? 	could I have banked?
could you have banked?
could she have banked?
could we have banked?
could you have banked?
could they have banked? 	could I have been banking?
could you have been banking?
could she have been banking?
could we have been banking?
could you have been banking?
could they have been banking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I bank?
couldn't you bank?
couldn't she bank?
couldn't we bank?
couldn't you bank?
couldn't they bank? 	couldn't I be banking?
couldn't you be banking?
couldn't she be banking?
couldn't we be banking?
couldn't you be banking?
couldn't they be banking? 	couldn't I have banked?
couldn't you have banked?
couldn't she have banked?
couldn't we have banked?
couldn't you have banked?
couldn't they have banked? 	couldn't I have been banking?
couldn't you have been banking?
couldn't she have been banking?
couldn't we have been banking?
couldn't you have been banking?
couldn't they have been banking?