could nick
Verbo regular: nick - nicked- nicked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could nick
you could nick
he could nick
we could nick
you could nick
they could nick 	I could be nicking
you could be nicking
he could be nicking
we could be nicking
you could be nicking
they could be nicking	I could have nicked
you could have nicked
he could have nicked
we could have nicked
you could have nicked
they could have nicked	I could have been nicking
you could have been nicking
he could have been nicking
we could have been nicking
you could have been nicking
they could have been nicking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't nick
you couldn't nick
he couldn't nick
we couldn't nick
you couldn't nick
they couldn't nick 	I couldn't be nicking
you couldn't be nicking
he couldn't be nicking
we couldn't be nicking
you couldn't be nicking
they couldn't be nicking	I couldn't have nicked
you couldn't have nicked
he couldn't have nicked
we couldn't have nicked
you couldn't have nicked
they couldn't have nicked	I couldn't have been nicking
you couldn't have been nicking
he couldn't have been nicking
we couldn't have been nicking
you couldn't have been nicking
they couldn't have been nicking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I nick?
could you nick?
could he nick?
could we nick?
could you nick?
could they nick? 	could I be nicking?
could you be nicking?
could he be nicking?
could we be nicking?
could you be nicking?
could they be nicking? 	could I have nicked?
could you have nicked?
could he have nicked?
could we have nicked?
could you have nicked?
could they have nicked? 	could I have been nicking?
could you have been nicking?
could he have been nicking?
could we have been nicking?
could you have been nicking?
could they have been nicking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I nick?
couldn't you nick?
couldn't he nick?
couldn't we nick?
couldn't you nick?
couldn't they nick? 	couldn't I be nicking?
couldn't you be nicking?
couldn't he be nicking?
couldn't we be nicking?
couldn't you be nicking?
couldn't they be nicking? 	couldn't I have nicked?
couldn't you have nicked?
couldn't he have nicked?
couldn't we have nicked?
couldn't you have nicked?
couldn't they have nicked? 	couldn't I have been nicking?
couldn't you have been nicking?
couldn't he have been nicking?
couldn't we have been nicking?
couldn't you have been nicking?
couldn't they have been nicking?