could knife
Verbo regolare: knife - knifed- knifed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could knife
you could knife
she could knife
we could knife
you could knife
they could knife 	I could be knifing
you could be knifing
she could be knifing
we could be knifing
you could be knifing
they could be knifing	I could have knifed
you could have knifed
she could have knifed
we could have knifed
you could have knifed
they could have knifed	I could have been knifing
you could have been knifing
she could have been knifing
we could have been knifing
you could have been knifing
they could have been knifing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not knife
you could not knife
she could not knife
we could not knife
you could not knife
they could not knife 	I could not be knifing
you could not be knifing
she could not be knifing
we could not be knifing
you could not be knifing
they could not be knifing	I could not have knifed
you could not have knifed
she could not have knifed
we could not have knifed
you could not have knifed
they could not have knifed	I could not have been knifing
you could not have been knifing
she could not have been knifing
we could not have been knifing
you could not have been knifing
they could not have been knifing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I knife?
could you knife?
could she knife?
could we knife?
could you knife?
could they knife? 	could I be knifing?
could you be knifing?
could she be knifing?
could we be knifing?
could you be knifing?
could they be knifing? 	could I have knifed?
could you have knifed?
could she have knifed?
could we have knifed?
could you have knifed?
could they have knifed? 	could I have been knifing?
could you have been knifing?
could she have been knifing?
could we have been knifing?
could you have been knifing?
could they have been knifing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not knife?
could you not knife?
could she not knife?
could we not knife?
could you not knife?
could they not knife? 	could I not be knifing?
could you not be knifing?
could she not be knifing?
could we not be knifing?
could you not be knifing?
could they not be knifing? 	could I not have knifed?
could you not have knifed?
could she not have knifed?
could we not have knifed?
could you not have knifed?
could they not have knifed? 	could I not have been knifing?
could you not have been knifing?
could she not have been knifing?
could we not have been knifing?
could you not have been knifing?
could they not have been knifing?