could crab
Verbo regular: crab - crabbed- crabbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could crab
you could crab
he could crab
we could crab
you could crab
they could crab 	I could be crabbing
you could be crabbing
he could be crabbing
we could be crabbing
you could be crabbing
they could be crabbing	I could have crabbed
you could have crabbed
he could have crabbed
we could have crabbed
you could have crabbed
they could have crabbed	I could have been crabbing
you could have been crabbing
he could have been crabbing
we could have been crabbing
you could have been crabbing
they could have been crabbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not crab
you could not crab
he could not crab
we could not crab
you could not crab
they could not crab 	I could not be crabbing
you could not be crabbing
he could not be crabbing
we could not be crabbing
you could not be crabbing
they could not be crabbing	I could not have crabbed
you could not have crabbed
he could not have crabbed
we could not have crabbed
you could not have crabbed
they could not have crabbed	I could not have been crabbing
you could not have been crabbing
he could not have been crabbing
we could not have been crabbing
you could not have been crabbing
they could not have been crabbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I crab?
could you crab?
could he crab?
could we crab?
could you crab?
could they crab? 	could I be crabbing?
could you be crabbing?
could he be crabbing?
could we be crabbing?
could you be crabbing?
could they be crabbing? 	could I have crabbed?
could you have crabbed?
could he have crabbed?
could we have crabbed?
could you have crabbed?
could they have crabbed? 	could I have been crabbing?
could you have been crabbing?
could he have been crabbing?
could we have been crabbing?
could you have been crabbing?
could they have been crabbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not crab?
could you not crab?
could he not crab?
could we not crab?
could you not crab?
could they not crab? 	could I not be crabbing?
could you not be crabbing?
could he not be crabbing?
could we not be crabbing?
could you not be crabbing?
could they not be crabbing? 	could I not have crabbed?
could you not have crabbed?
could he not have crabbed?
could we not have crabbed?
could you not have crabbed?
could they not have crabbed? 	could I not have been crabbing?
could you not have been crabbing?
could he not have been crabbing?
could we not have been crabbing?
could you not have been crabbing?
could they not have been crabbing?