could square-dance
Verbo regular: square-dance - square-danced- square-danced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could square-dance
you could square-dance
she could square-dance
we could square-dance
you could square-dance
they could square-dance 	I could be square-dancing
you could be square-dancing
she could be square-dancing
we could be square-dancing
you could be square-dancing
they could be square-dancing	I could have square-danced
you could have square-danced
she could have square-danced
we could have square-danced
you could have square-danced
they could have square-danced	I could have been square-dancing
you could have been square-dancing
she could have been square-dancing
we could have been square-dancing
you could have been square-dancing
they could have been square-dancing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not square-dance
you could not square-dance
she could not square-dance
we could not square-dance
you could not square-dance
they could not square-dance 	I could not be square-dancing
you could not be square-dancing
she could not be square-dancing
we could not be square-dancing
you could not be square-dancing
they could not be square-dancing	I could not have square-danced
you could not have square-danced
she could not have square-danced
we could not have square-danced
you could not have square-danced
they could not have square-danced	I could not have been square-dancing
you could not have been square-dancing
she could not have been square-dancing
we could not have been square-dancing
you could not have been square-dancing
they could not have been square-dancing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I square-dance?
could you square-dance?
could she square-dance?
could we square-dance?
could you square-dance?
could they square-dance? 	could I be square-dancing?
could you be square-dancing?
could she be square-dancing?
could we be square-dancing?
could you be square-dancing?
could they be square-dancing? 	could I have square-danced?
could you have square-danced?
could she have square-danced?
could we have square-danced?
could you have square-danced?
could they have square-danced? 	could I have been square-dancing?
could you have been square-dancing?
could she have been square-dancing?
could we have been square-dancing?
could you have been square-dancing?
could they have been square-dancing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not square-dance?
could you not square-dance?
could she not square-dance?
could we not square-dance?
could you not square-dance?
could they not square-dance? 	could I not be square-dancing?
could you not be square-dancing?
could she not be square-dancing?
could we not be square-dancing?
could you not be square-dancing?
could they not be square-dancing? 	could I not have square-danced?
could you not have square-danced?
could she not have square-danced?
could we not have square-danced?
could you not have square-danced?
could they not have square-danced? 	could I not have been square-dancing?
could you not have been square-dancing?
could she not have been square-dancing?
could we not have been square-dancing?
could you not have been square-dancing?
could they not have been square-dancing?