could seine
Verbo regular: seine - seined- seined

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could seine
you could seine
he could seine
we could seine
you could seine
they could seine 	I could be seining
you could be seining
he could be seining
we could be seining
you could be seining
they could be seining	I could have seined
you could have seined
he could have seined
we could have seined
you could have seined
they could have seined	I could have been seining
you could have been seining
he could have been seining
we could have been seining
you could have been seining
they could have been seining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not seine
you could not seine
he could not seine
we could not seine
you could not seine
they could not seine 	I could not be seining
you could not be seining
he could not be seining
we could not be seining
you could not be seining
they could not be seining	I could not have seined
you could not have seined
he could not have seined
we could not have seined
you could not have seined
they could not have seined	I could not have been seining
you could not have been seining
he could not have been seining
we could not have been seining
you could not have been seining
they could not have been seining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I seine?
could you seine?
could he seine?
could we seine?
could you seine?
could they seine? 	could I be seining?
could you be seining?
could he be seining?
could we be seining?
could you be seining?
could they be seining? 	could I have seined?
could you have seined?
could he have seined?
could we have seined?
could you have seined?
could they have seined? 	could I have been seining?
could you have been seining?
could he have been seining?
could we have been seining?
could you have been seining?
could they have been seining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not seine?
could you not seine?
could he not seine?
could we not seine?
could you not seine?
could they not seine? 	could I not be seining?
could you not be seining?
could he not be seining?
could we not be seining?
could you not be seining?
could they not be seining? 	could I not have seined?
could you not have seined?
could he not have seined?
could we not have seined?
could you not have seined?
could they not have seined? 	could I not have been seining?
could you not have been seining?
could he not have been seining?
could we not have been seining?
could you not have been seining?
could they not have been seining?