could deaden
Verbo regular: deaden - deadened- deadened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could deaden
you could deaden
she could deaden
we could deaden
you could deaden
they could deaden 	I could be deadening
you could be deadening
she could be deadening
we could be deadening
you could be deadening
they could be deadening	I could have deadened
you could have deadened
she could have deadened
we could have deadened
you could have deadened
they could have deadened	I could have been deadening
you could have been deadening
she could have been deadening
we could have been deadening
you could have been deadening
they could have been deadening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't deaden
you couldn't deaden
she couldn't deaden
we couldn't deaden
you couldn't deaden
they couldn't deaden 	I couldn't be deadening
you couldn't be deadening
she couldn't be deadening
we couldn't be deadening
you couldn't be deadening
they couldn't be deadening	I couldn't have deadened
you couldn't have deadened
she couldn't have deadened
we couldn't have deadened
you couldn't have deadened
they couldn't have deadened	I couldn't have been deadening
you couldn't have been deadening
she couldn't have been deadening
we couldn't have been deadening
you couldn't have been deadening
they couldn't have been deadening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I deaden?
could you deaden?
could she deaden?
could we deaden?
could you deaden?
could they deaden? 	could I be deadening?
could you be deadening?
could she be deadening?
could we be deadening?
could you be deadening?
could they be deadening? 	could I have deadened?
could you have deadened?
could she have deadened?
could we have deadened?
could you have deadened?
could they have deadened? 	could I have been deadening?
could you have been deadening?
could she have been deadening?
could we have been deadening?
could you have been deadening?
could they have been deadening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I deaden?
couldn't you deaden?
couldn't she deaden?
couldn't we deaden?
couldn't you deaden?
couldn't they deaden? 	couldn't I be deadening?
couldn't you be deadening?
couldn't she be deadening?
couldn't we be deadening?
couldn't you be deadening?
couldn't they be deadening? 	couldn't I have deadened?
couldn't you have deadened?
couldn't she have deadened?
couldn't we have deadened?
couldn't you have deadened?
couldn't they have deadened? 	couldn't I have been deadening?
couldn't you have been deadening?
couldn't she have been deadening?
couldn't we have been deadening?
couldn't you have been deadening?
couldn't they have been deadening?