could verify
Verbo regular: verify - verified- verified

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could verify
you could verify
she could verify
we could verify
you could verify
they could verify 	I could be verifying
you could be verifying
she could be verifying
we could be verifying
you could be verifying
they could be verifying	I could have verified
you could have verified
she could have verified
we could have verified
you could have verified
they could have verified	I could have been verifying
you could have been verifying
she could have been verifying
we could have been verifying
you could have been verifying
they could have been verifying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not verify
you could not verify
she could not verify
we could not verify
you could not verify
they could not verify 	I could not be verifying
you could not be verifying
she could not be verifying
we could not be verifying
you could not be verifying
they could not be verifying	I could not have verified
you could not have verified
she could not have verified
we could not have verified
you could not have verified
they could not have verified	I could not have been verifying
you could not have been verifying
she could not have been verifying
we could not have been verifying
you could not have been verifying
they could not have been verifying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I verify?
could you verify?
could she verify?
could we verify?
could you verify?
could they verify? 	could I be verifying?
could you be verifying?
could she be verifying?
could we be verifying?
could you be verifying?
could they be verifying? 	could I have verified?
could you have verified?
could she have verified?
could we have verified?
could you have verified?
could they have verified? 	could I have been verifying?
could you have been verifying?
could she have been verifying?
could we have been verifying?
could you have been verifying?
could they have been verifying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not verify?
could you not verify?
could she not verify?
could we not verify?
could you not verify?
could they not verify? 	could I not be verifying?
could you not be verifying?
could she not be verifying?
could we not be verifying?
could you not be verifying?
could they not be verifying? 	could I not have verified?
could you not have verified?
could she not have verified?
could we not have verified?
could you not have verified?
could they not have verified? 	could I not have been verifying?
could you not have been verifying?
could she not have been verifying?
could we not have been verifying?
could you not have been verifying?
could they not have been verifying?