could lock
Regelmä&szlig;iges Verb: lock - locked- locked

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could lock
you could lock
she could lock
we could lock
you could lock
they could lock 	I could be locking
you could be locking
she could be locking
we could be locking
you could be locking
they could be locking	I could have locked
you could have locked
she could have locked
we could have locked
you could have locked
they could have locked	I could have been locking
you could have been locking
she could have been locking
we could have been locking
you could have been locking
they could have been locking	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I couldn't lock
you couldn't lock
she couldn't lock
we couldn't lock
you couldn't lock
they couldn't lock 	I couldn't be locking
you couldn't be locking
she couldn't be locking
we couldn't be locking
you couldn't be locking
they couldn't be locking	I couldn't have locked
you couldn't have locked
she couldn't have locked
we couldn't have locked
you couldn't have locked
they couldn't have locked	I couldn't have been locking
you couldn't have been locking
she couldn't have been locking
we couldn't have been locking
you couldn't have been locking
they couldn't have been locking	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I lock?
could you lock?
could she lock?
could we lock?
could you lock?
could they lock? 	could I be locking?
could you be locking?
could she be locking?
could we be locking?
could you be locking?
could they be locking? 	could I have locked?
could you have locked?
could she have locked?
could we have locked?
could you have locked?
could they have locked? 	could I have been locking?
could you have been locking?
could she have been locking?
could we have been locking?
could you have been locking?
could they have been locking? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
couldn't I lock?
couldn't you lock?
couldn't she lock?
couldn't we lock?
couldn't you lock?
couldn't they lock? 	couldn't I be locking?
couldn't you be locking?
couldn't she be locking?
couldn't we be locking?
couldn't you be locking?
couldn't they be locking? 	couldn't I have locked?
couldn't you have locked?
couldn't she have locked?
couldn't we have locked?
couldn't you have locked?
couldn't they have locked? 	couldn't I have been locking?
couldn't you have been locking?
couldn't she have been locking?
couldn't we have been locking?
couldn't you have been locking?
couldn't they have been locking?