could dab
Verbo regular: dab - dabbed- dabbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could dab
you could dab
he could dab
we could dab
you could dab
they could dab 	I could be dabbing
you could be dabbing
he could be dabbing
we could be dabbing
you could be dabbing
they could be dabbing	I could have dabbed
you could have dabbed
he could have dabbed
we could have dabbed
you could have dabbed
they could have dabbed	I could have been dabbing
you could have been dabbing
he could have been dabbing
we could have been dabbing
you could have been dabbing
they could have been dabbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't dab
you couldn't dab
he couldn't dab
we couldn't dab
you couldn't dab
they couldn't dab 	I couldn't be dabbing
you couldn't be dabbing
he couldn't be dabbing
we couldn't be dabbing
you couldn't be dabbing
they couldn't be dabbing	I couldn't have dabbed
you couldn't have dabbed
he couldn't have dabbed
we couldn't have dabbed
you couldn't have dabbed
they couldn't have dabbed	I couldn't have been dabbing
you couldn't have been dabbing
he couldn't have been dabbing
we couldn't have been dabbing
you couldn't have been dabbing
they couldn't have been dabbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I dab?
could you dab?
could he dab?
could we dab?
could you dab?
could they dab? 	could I be dabbing?
could you be dabbing?
could he be dabbing?
could we be dabbing?
could you be dabbing?
could they be dabbing? 	could I have dabbed?
could you have dabbed?
could he have dabbed?
could we have dabbed?
could you have dabbed?
could they have dabbed? 	could I have been dabbing?
could you have been dabbing?
could he have been dabbing?
could we have been dabbing?
could you have been dabbing?
could they have been dabbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I dab?
couldn't you dab?
couldn't he dab?
couldn't we dab?
couldn't you dab?
couldn't they dab? 	couldn't I be dabbing?
couldn't you be dabbing?
couldn't he be dabbing?
couldn't we be dabbing?
couldn't you be dabbing?
couldn't they be dabbing? 	couldn't I have dabbed?
couldn't you have dabbed?
couldn't he have dabbed?
couldn't we have dabbed?
couldn't you have dabbed?
couldn't they have dabbed? 	couldn't I have been dabbing?
couldn't you have been dabbing?
couldn't he have been dabbing?
couldn't we have been dabbing?
couldn't you have been dabbing?
couldn't they have been dabbing?