could crib
Verbo regular: crib - cribbed- cribbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could crib
you could crib
he could crib
we could crib
you could crib
they could crib 	I could be cribbing
you could be cribbing
he could be cribbing
we could be cribbing
you could be cribbing
they could be cribbing	I could have cribbed
you could have cribbed
he could have cribbed
we could have cribbed
you could have cribbed
they could have cribbed	I could have been cribbing
you could have been cribbing
he could have been cribbing
we could have been cribbing
you could have been cribbing
they could have been cribbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not crib
you could not crib
he could not crib
we could not crib
you could not crib
they could not crib 	I could not be cribbing
you could not be cribbing
he could not be cribbing
we could not be cribbing
you could not be cribbing
they could not be cribbing	I could not have cribbed
you could not have cribbed
he could not have cribbed
we could not have cribbed
you could not have cribbed
they could not have cribbed	I could not have been cribbing
you could not have been cribbing
he could not have been cribbing
we could not have been cribbing
you could not have been cribbing
they could not have been cribbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I crib?
could you crib?
could he crib?
could we crib?
could you crib?
could they crib? 	could I be cribbing?
could you be cribbing?
could he be cribbing?
could we be cribbing?
could you be cribbing?
could they be cribbing? 	could I have cribbed?
could you have cribbed?
could he have cribbed?
could we have cribbed?
could you have cribbed?
could they have cribbed? 	could I have been cribbing?
could you have been cribbing?
could he have been cribbing?
could we have been cribbing?
could you have been cribbing?
could they have been cribbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not crib?
could you not crib?
could he not crib?
could we not crib?
could you not crib?
could they not crib? 	could I not be cribbing?
could you not be cribbing?
could he not be cribbing?
could we not be cribbing?
could you not be cribbing?
could they not be cribbing? 	could I not have cribbed?
could you not have cribbed?
could he not have cribbed?
could we not have cribbed?
could you not have cribbed?
could they not have cribbed? 	could I not have been cribbing?
could you not have been cribbing?
could he not have been cribbing?
could we not have been cribbing?
could you not have been cribbing?
could they not have been cribbing?