could brain
Verbo regular: brain - brained- brained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could brain
you could brain
she could brain
we could brain
you could brain
they could brain 	I could be braining
you could be braining
she could be braining
we could be braining
you could be braining
they could be braining	I could have brained
you could have brained
she could have brained
we could have brained
you could have brained
they could have brained	I could have been braining
you could have been braining
she could have been braining
we could have been braining
you could have been braining
they could have been braining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not brain
you could not brain
she could not brain
we could not brain
you could not brain
they could not brain 	I could not be braining
you could not be braining
she could not be braining
we could not be braining
you could not be braining
they could not be braining	I could not have brained
you could not have brained
she could not have brained
we could not have brained
you could not have brained
they could not have brained	I could not have been braining
you could not have been braining
she could not have been braining
we could not have been braining
you could not have been braining
they could not have been braining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I brain?
could you brain?
could she brain?
could we brain?
could you brain?
could they brain? 	could I be braining?
could you be braining?
could she be braining?
could we be braining?
could you be braining?
could they be braining? 	could I have brained?
could you have brained?
could she have brained?
could we have brained?
could you have brained?
could they have brained? 	could I have been braining?
could you have been braining?
could she have been braining?
could we have been braining?
could you have been braining?
could they have been braining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not brain?
could you not brain?
could she not brain?
could we not brain?
could you not brain?
could they not brain? 	could I not be braining?
could you not be braining?
could she not be braining?
could we not be braining?
could you not be braining?
could they not be braining? 	could I not have brained?
could you not have brained?
could she not have brained?
could we not have brained?
could you not have brained?
could they not have brained? 	could I not have been braining?
could you not have been braining?
could she not have been braining?
could we not have been braining?
could you not have been braining?
could they not have been braining?