could scab
Verbo regular: scab - scabbed- scabbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could scab
you could scab
he could scab
we could scab
you could scab
they could scab 	I could be scabbing
you could be scabbing
he could be scabbing
we could be scabbing
you could be scabbing
they could be scabbing	I could have scabbed
you could have scabbed
he could have scabbed
we could have scabbed
you could have scabbed
they could have scabbed	I could have been scabbing
you could have been scabbing
he could have been scabbing
we could have been scabbing
you could have been scabbing
they could have been scabbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not scab
you could not scab
he could not scab
we could not scab
you could not scab
they could not scab 	I could not be scabbing
you could not be scabbing
he could not be scabbing
we could not be scabbing
you could not be scabbing
they could not be scabbing	I could not have scabbed
you could not have scabbed
he could not have scabbed
we could not have scabbed
you could not have scabbed
they could not have scabbed	I could not have been scabbing
you could not have been scabbing
he could not have been scabbing
we could not have been scabbing
you could not have been scabbing
they could not have been scabbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I scab?
could you scab?
could he scab?
could we scab?
could you scab?
could they scab? 	could I be scabbing?
could you be scabbing?
could he be scabbing?
could we be scabbing?
could you be scabbing?
could they be scabbing? 	could I have scabbed?
could you have scabbed?
could he have scabbed?
could we have scabbed?
could you have scabbed?
could they have scabbed? 	could I have been scabbing?
could you have been scabbing?
could he have been scabbing?
could we have been scabbing?
could you have been scabbing?
could they have been scabbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not scab?
could you not scab?
could he not scab?
could we not scab?
could you not scab?
could they not scab? 	could I not be scabbing?
could you not be scabbing?
could he not be scabbing?
could we not be scabbing?
could you not be scabbing?
could they not be scabbing? 	could I not have scabbed?
could you not have scabbed?
could he not have scabbed?
could we not have scabbed?
could you not have scabbed?
could they not have scabbed? 	could I not have been scabbing?
could you not have been scabbing?
could he not have been scabbing?
could we not have been scabbing?
could you not have been scabbing?
could they not have been scabbing?