could sob
Verbo regular: sob - sobbed- sobbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could sob
you could sob
he could sob
we could sob
you could sob
they could sob 	I could be sobbing
you could be sobbing
he could be sobbing
we could be sobbing
you could be sobbing
they could be sobbing	I could have sobbed
you could have sobbed
he could have sobbed
we could have sobbed
you could have sobbed
they could have sobbed	I could have been sobbing
you could have been sobbing
he could have been sobbing
we could have been sobbing
you could have been sobbing
they could have been sobbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not sob
you could not sob
he could not sob
we could not sob
you could not sob
they could not sob 	I could not be sobbing
you could not be sobbing
he could not be sobbing
we could not be sobbing
you could not be sobbing
they could not be sobbing	I could not have sobbed
you could not have sobbed
he could not have sobbed
we could not have sobbed
you could not have sobbed
they could not have sobbed	I could not have been sobbing
you could not have been sobbing
he could not have been sobbing
we could not have been sobbing
you could not have been sobbing
they could not have been sobbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I sob?
could you sob?
could he sob?
could we sob?
could you sob?
could they sob? 	could I be sobbing?
could you be sobbing?
could he be sobbing?
could we be sobbing?
could you be sobbing?
could they be sobbing? 	could I have sobbed?
could you have sobbed?
could he have sobbed?
could we have sobbed?
could you have sobbed?
could they have sobbed? 	could I have been sobbing?
could you have been sobbing?
could he have been sobbing?
could we have been sobbing?
could you have been sobbing?
could they have been sobbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not sob?
could you not sob?
could he not sob?
could we not sob?
could you not sob?
could they not sob? 	could I not be sobbing?
could you not be sobbing?
could he not be sobbing?
could we not be sobbing?
could you not be sobbing?
could they not be sobbing? 	could I not have sobbed?
could you not have sobbed?
could he not have sobbed?
could we not have sobbed?
could you not have sobbed?
could they not have sobbed? 	could I not have been sobbing?
could you not have been sobbing?
could he not have been sobbing?
could we not have been sobbing?
could you not have been sobbing?
could they not have been sobbing?