could secure
Verbo regular: secure - secured- secured

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could secure
you could secure
he could secure
we could secure
you could secure
they could secure 	I could be securing
you could be securing
he could be securing
we could be securing
you could be securing
they could be securing	I could have secured
you could have secured
he could have secured
we could have secured
you could have secured
they could have secured	I could have been securing
you could have been securing
he could have been securing
we could have been securing
you could have been securing
they could have been securing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not secure
you could not secure
he could not secure
we could not secure
you could not secure
they could not secure 	I could not be securing
you could not be securing
he could not be securing
we could not be securing
you could not be securing
they could not be securing	I could not have secured
you could not have secured
he could not have secured
we could not have secured
you could not have secured
they could not have secured	I could not have been securing
you could not have been securing
he could not have been securing
we could not have been securing
you could not have been securing
they could not have been securing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I secure?
could you secure?
could he secure?
could we secure?
could you secure?
could they secure? 	could I be securing?
could you be securing?
could he be securing?
could we be securing?
could you be securing?
could they be securing? 	could I have secured?
could you have secured?
could he have secured?
could we have secured?
could you have secured?
could they have secured? 	could I have been securing?
could you have been securing?
could he have been securing?
could we have been securing?
could you have been securing?
could they have been securing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not secure?
could you not secure?
could he not secure?
could we not secure?
could you not secure?
could they not secure? 	could I not be securing?
could you not be securing?
could he not be securing?
could we not be securing?
could you not be securing?
could they not be securing? 	could I not have secured?
could you not have secured?
could he not have secured?
could we not have secured?
could you not have secured?
could they not have secured? 	could I not have been securing?
could you not have been securing?
could he not have been securing?
could we not have been securing?
could you not have been securing?
could they not have been securing?