could shellac
Verbo regular: shellac - shellaced- shellaced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could shellac
you could shellac
she could shellac
we could shellac
you could shellac
they could shellac 	I could be shellacing
you could be shellacing
she could be shellacing
we could be shellacing
you could be shellacing
they could be shellacing	I could have shellaced
you could have shellaced
she could have shellaced
we could have shellaced
you could have shellaced
they could have shellaced	I could have been shellacing
you could have been shellacing
she could have been shellacing
we could have been shellacing
you could have been shellacing
they could have been shellacing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't shellac
you couldn't shellac
she couldn't shellac
we couldn't shellac
you couldn't shellac
they couldn't shellac 	I couldn't be shellacing
you couldn't be shellacing
she couldn't be shellacing
we couldn't be shellacing
you couldn't be shellacing
they couldn't be shellacing	I couldn't have shellaced
you couldn't have shellaced
she couldn't have shellaced
we couldn't have shellaced
you couldn't have shellaced
they couldn't have shellaced	I couldn't have been shellacing
you couldn't have been shellacing
she couldn't have been shellacing
we couldn't have been shellacing
you couldn't have been shellacing
they couldn't have been shellacing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I shellac?
could you shellac?
could she shellac?
could we shellac?
could you shellac?
could they shellac? 	could I be shellacing?
could you be shellacing?
could she be shellacing?
could we be shellacing?
could you be shellacing?
could they be shellacing? 	could I have shellaced?
could you have shellaced?
could she have shellaced?
could we have shellaced?
could you have shellaced?
could they have shellaced? 	could I have been shellacing?
could you have been shellacing?
could she have been shellacing?
could we have been shellacing?
could you have been shellacing?
could they have been shellacing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I shellac?
couldn't you shellac?
couldn't she shellac?
couldn't we shellac?
couldn't you shellac?
couldn't they shellac? 	couldn't I be shellacing?
couldn't you be shellacing?
couldn't she be shellacing?
couldn't we be shellacing?
couldn't you be shellacing?
couldn't they be shellacing? 	couldn't I have shellaced?
couldn't you have shellaced?
couldn't she have shellaced?
couldn't we have shellaced?
couldn't you have shellaced?
couldn't they have shellaced? 	couldn't I have been shellacing?
couldn't you have been shellacing?
couldn't she have been shellacing?
couldn't we have been shellacing?
couldn't you have been shellacing?
couldn't they have been shellacing?