could unshell
Verbo regular: unshell - unshelled- unshelled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could unshell
you could unshell
he could unshell
we could unshell
you could unshell
they could unshell 	I could be unshelling
you could be unshelling
he could be unshelling
we could be unshelling
you could be unshelling
they could be unshelling	I could have unshelled
you could have unshelled
he could have unshelled
we could have unshelled
you could have unshelled
they could have unshelled	I could have been unshelling
you could have been unshelling
he could have been unshelling
we could have been unshelling
you could have been unshelling
they could have been unshelling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't unshell
you couldn't unshell
he couldn't unshell
we couldn't unshell
you couldn't unshell
they couldn't unshell 	I couldn't be unshelling
you couldn't be unshelling
he couldn't be unshelling
we couldn't be unshelling
you couldn't be unshelling
they couldn't be unshelling	I couldn't have unshelled
you couldn't have unshelled
he couldn't have unshelled
we couldn't have unshelled
you couldn't have unshelled
they couldn't have unshelled	I couldn't have been unshelling
you couldn't have been unshelling
he couldn't have been unshelling
we couldn't have been unshelling
you couldn't have been unshelling
they couldn't have been unshelling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I unshell?
could you unshell?
could he unshell?
could we unshell?
could you unshell?
could they unshell? 	could I be unshelling?
could you be unshelling?
could he be unshelling?
could we be unshelling?
could you be unshelling?
could they be unshelling? 	could I have unshelled?
could you have unshelled?
could he have unshelled?
could we have unshelled?
could you have unshelled?
could they have unshelled? 	could I have been unshelling?
could you have been unshelling?
could he have been unshelling?
could we have been unshelling?
could you have been unshelling?
could they have been unshelling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I unshell?
couldn't you unshell?
couldn't he unshell?
couldn't we unshell?
couldn't you unshell?
couldn't they unshell? 	couldn't I be unshelling?
couldn't you be unshelling?
couldn't he be unshelling?
couldn't we be unshelling?
couldn't you be unshelling?
couldn't they be unshelling? 	couldn't I have unshelled?
couldn't you have unshelled?
couldn't he have unshelled?
couldn't we have unshelled?
couldn't you have unshelled?
couldn't they have unshelled? 	couldn't I have been unshelling?
couldn't you have been unshelling?
couldn't he have been unshelling?
couldn't we have been unshelling?
couldn't you have been unshelling?
couldn't they have been unshelling?