could materialize
Verbo regular: materialize - materialized- materialized

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could materialize
you could materialize
he could materialize
we could materialize
you could materialize
they could materialize 	I could be materializing
you could be materializing
he could be materializing
we could be materializing
you could be materializing
they could be materializing	I could have materialized
you could have materialized
he could have materialized
we could have materialized
you could have materialized
they could have materialized	I could have been materializing
you could have been materializing
he could have been materializing
we could have been materializing
you could have been materializing
they could have been materializing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't materialize
you couldn't materialize
he couldn't materialize
we couldn't materialize
you couldn't materialize
they couldn't materialize 	I couldn't be materializing
you couldn't be materializing
he couldn't be materializing
we couldn't be materializing
you couldn't be materializing
they couldn't be materializing	I couldn't have materialized
you couldn't have materialized
he couldn't have materialized
we couldn't have materialized
you couldn't have materialized
they couldn't have materialized	I couldn't have been materializing
you couldn't have been materializing
he couldn't have been materializing
we couldn't have been materializing
you couldn't have been materializing
they couldn't have been materializing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I materialize?
could you materialize?
could he materialize?
could we materialize?
could you materialize?
could they materialize? 	could I be materializing?
could you be materializing?
could he be materializing?
could we be materializing?
could you be materializing?
could they be materializing? 	could I have materialized?
could you have materialized?
could he have materialized?
could we have materialized?
could you have materialized?
could they have materialized? 	could I have been materializing?
could you have been materializing?
could he have been materializing?
could we have been materializing?
could you have been materializing?
could they have been materializing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I materialize?
couldn't you materialize?
couldn't he materialize?
couldn't we materialize?
couldn't you materialize?
couldn't they materialize? 	couldn't I be materializing?
couldn't you be materializing?
couldn't he be materializing?
couldn't we be materializing?
couldn't you be materializing?
couldn't they be materializing? 	couldn't I have materialized?
couldn't you have materialized?
couldn't he have materialized?
couldn't we have materialized?
couldn't you have materialized?
couldn't they have materialized? 	couldn't I have been materializing?
couldn't you have been materializing?
couldn't he have been materializing?
couldn't we have been materializing?
couldn't you have been materializing?
couldn't they have been materializing?