could dog
Verbo regular: dog - dogged- dogged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could dog
you could dog
he could dog
we could dog
you could dog
they could dog 	I could be dogging
you could be dogging
he could be dogging
we could be dogging
you could be dogging
they could be dogging	I could have dogged
you could have dogged
he could have dogged
we could have dogged
you could have dogged
they could have dogged	I could have been dogging
you could have been dogging
he could have been dogging
we could have been dogging
you could have been dogging
they could have been dogging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not dog
you could not dog
he could not dog
we could not dog
you could not dog
they could not dog 	I could not be dogging
you could not be dogging
he could not be dogging
we could not be dogging
you could not be dogging
they could not be dogging	I could not have dogged
you could not have dogged
he could not have dogged
we could not have dogged
you could not have dogged
they could not have dogged	I could not have been dogging
you could not have been dogging
he could not have been dogging
we could not have been dogging
you could not have been dogging
they could not have been dogging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I dog?
could you dog?
could he dog?
could we dog?
could you dog?
could they dog? 	could I be dogging?
could you be dogging?
could he be dogging?
could we be dogging?
could you be dogging?
could they be dogging? 	could I have dogged?
could you have dogged?
could he have dogged?
could we have dogged?
could you have dogged?
could they have dogged? 	could I have been dogging?
could you have been dogging?
could he have been dogging?
could we have been dogging?
could you have been dogging?
could they have been dogging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not dog?
could you not dog?
could he not dog?
could we not dog?
could you not dog?
could they not dog? 	could I not be dogging?
could you not be dogging?
could he not be dogging?
could we not be dogging?
could you not be dogging?
could they not be dogging? 	could I not have dogged?
could you not have dogged?
could he not have dogged?
could we not have dogged?
could you not have dogged?
could they not have dogged? 	could I not have been dogging?
could you not have been dogging?
could he not have been dogging?
could we not have been dogging?
could you not have been dogging?
could they not have been dogging?