could seed
Verbo regular: seed - seeded- seeded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could seed
you could seed
he could seed
we could seed
you could seed
they could seed 	I could be seeding
you could be seeding
he could be seeding
we could be seeding
you could be seeding
they could be seeding	I could have seeded
you could have seeded
he could have seeded
we could have seeded
you could have seeded
they could have seeded	I could have been seeding
you could have been seeding
he could have been seeding
we could have been seeding
you could have been seeding
they could have been seeding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not seed
you could not seed
he could not seed
we could not seed
you could not seed
they could not seed 	I could not be seeding
you could not be seeding
he could not be seeding
we could not be seeding
you could not be seeding
they could not be seeding	I could not have seeded
you could not have seeded
he could not have seeded
we could not have seeded
you could not have seeded
they could not have seeded	I could not have been seeding
you could not have been seeding
he could not have been seeding
we could not have been seeding
you could not have been seeding
they could not have been seeding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I seed?
could you seed?
could he seed?
could we seed?
could you seed?
could they seed? 	could I be seeding?
could you be seeding?
could he be seeding?
could we be seeding?
could you be seeding?
could they be seeding? 	could I have seeded?
could you have seeded?
could he have seeded?
could we have seeded?
could you have seeded?
could they have seeded? 	could I have been seeding?
could you have been seeding?
could he have been seeding?
could we have been seeding?
could you have been seeding?
could they have been seeding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not seed?
could you not seed?
could he not seed?
could we not seed?
could you not seed?
could they not seed? 	could I not be seeding?
could you not be seeding?
could he not be seeding?
could we not be seeding?
could you not be seeding?
could they not be seeding? 	could I not have seeded?
could you not have seeded?
could he not have seeded?
could we not have seeded?
could you not have seeded?
could they not have seeded? 	could I not have been seeding?
could you not have been seeding?
could he not have been seeding?
could we not have been seeding?
could you not have been seeding?
could they not have been seeding?