could grabble
Verbo regular: grabble - grabbled- grabbled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could grabble
you could grabble
he could grabble
we could grabble
you could grabble
they could grabble 	I could be grabbling
you could be grabbling
he could be grabbling
we could be grabbling
you could be grabbling
they could be grabbling	I could have grabbled
you could have grabbled
he could have grabbled
we could have grabbled
you could have grabbled
they could have grabbled	I could have been grabbling
you could have been grabbling
he could have been grabbling
we could have been grabbling
you could have been grabbling
they could have been grabbling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not grabble
you could not grabble
he could not grabble
we could not grabble
you could not grabble
they could not grabble 	I could not be grabbling
you could not be grabbling
he could not be grabbling
we could not be grabbling
you could not be grabbling
they could not be grabbling	I could not have grabbled
you could not have grabbled
he could not have grabbled
we could not have grabbled
you could not have grabbled
they could not have grabbled	I could not have been grabbling
you could not have been grabbling
he could not have been grabbling
we could not have been grabbling
you could not have been grabbling
they could not have been grabbling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I grabble?
could you grabble?
could he grabble?
could we grabble?
could you grabble?
could they grabble? 	could I be grabbling?
could you be grabbling?
could he be grabbling?
could we be grabbling?
could you be grabbling?
could they be grabbling? 	could I have grabbled?
could you have grabbled?
could he have grabbled?
could we have grabbled?
could you have grabbled?
could they have grabbled? 	could I have been grabbling?
could you have been grabbling?
could he have been grabbling?
could we have been grabbling?
could you have been grabbling?
could they have been grabbling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not grabble?
could you not grabble?
could he not grabble?
could we not grabble?
could you not grabble?
could they not grabble? 	could I not be grabbling?
could you not be grabbling?
could he not be grabbling?
could we not be grabbling?
could you not be grabbling?
could they not be grabbling? 	could I not have grabbled?
could you not have grabbled?
could he not have grabbled?
could we not have grabbled?
could you not have grabbled?
could they not have grabbled? 	could I not have been grabbling?
could you not have been grabbling?
could he not have been grabbling?
could we not have been grabbling?
could you not have been grabbling?
could they not have been grabbling?