could unseal
Verbo regular: unseal - unsealed- unsealed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could unseal
you could unseal
he could unseal
we could unseal
you could unseal
they could unseal 	I could be unsealing
you could be unsealing
he could be unsealing
we could be unsealing
you could be unsealing
they could be unsealing	I could have unsealed
you could have unsealed
he could have unsealed
we could have unsealed
you could have unsealed
they could have unsealed	I could have been unsealing
you could have been unsealing
he could have been unsealing
we could have been unsealing
you could have been unsealing
they could have been unsealing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't unseal
you couldn't unseal
he couldn't unseal
we couldn't unseal
you couldn't unseal
they couldn't unseal 	I couldn't be unsealing
you couldn't be unsealing
he couldn't be unsealing
we couldn't be unsealing
you couldn't be unsealing
they couldn't be unsealing	I couldn't have unsealed
you couldn't have unsealed
he couldn't have unsealed
we couldn't have unsealed
you couldn't have unsealed
they couldn't have unsealed	I couldn't have been unsealing
you couldn't have been unsealing
he couldn't have been unsealing
we couldn't have been unsealing
you couldn't have been unsealing
they couldn't have been unsealing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I unseal?
could you unseal?
could he unseal?
could we unseal?
could you unseal?
could they unseal? 	could I be unsealing?
could you be unsealing?
could he be unsealing?
could we be unsealing?
could you be unsealing?
could they be unsealing? 	could I have unsealed?
could you have unsealed?
could he have unsealed?
could we have unsealed?
could you have unsealed?
could they have unsealed? 	could I have been unsealing?
could you have been unsealing?
could he have been unsealing?
could we have been unsealing?
could you have been unsealing?
could they have been unsealing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I unseal?
couldn't you unseal?
couldn't he unseal?
couldn't we unseal?
couldn't you unseal?
couldn't they unseal? 	couldn't I be unsealing?
couldn't you be unsealing?
couldn't he be unsealing?
couldn't we be unsealing?
couldn't you be unsealing?
couldn't they be unsealing? 	couldn't I have unsealed?
couldn't you have unsealed?
couldn't he have unsealed?
couldn't we have unsealed?
couldn't you have unsealed?
couldn't they have unsealed? 	couldn't I have been unsealing?
couldn't you have been unsealing?
couldn't he have been unsealing?
couldn't we have been unsealing?
couldn't you have been unsealing?
couldn't they have been unsealing?