could tube
Regelmä&szlig;iges Verb: tube - tubed- tubed

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could tube
you could tube
she could tube
we could tube
you could tube
they could tube 	I could be tubing
you could be tubing
she could be tubing
we could be tubing
you could be tubing
they could be tubing	I could have tubed
you could have tubed
she could have tubed
we could have tubed
you could have tubed
they could have tubed	I could have been tubing
you could have been tubing
she could have been tubing
we could have been tubing
you could have been tubing
they could have been tubing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not tube
you could not tube
she could not tube
we could not tube
you could not tube
they could not tube 	I could not be tubing
you could not be tubing
she could not be tubing
we could not be tubing
you could not be tubing
they could not be tubing	I could not have tubed
you could not have tubed
she could not have tubed
we could not have tubed
you could not have tubed
they could not have tubed	I could not have been tubing
you could not have been tubing
she could not have been tubing
we could not have been tubing
you could not have been tubing
they could not have been tubing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I tube?
could you tube?
could she tube?
could we tube?
could you tube?
could they tube? 	could I be tubing?
could you be tubing?
could she be tubing?
could we be tubing?
could you be tubing?
could they be tubing? 	could I have tubed?
could you have tubed?
could she have tubed?
could we have tubed?
could you have tubed?
could they have tubed? 	could I have been tubing?
could you have been tubing?
could she have been tubing?
could we have been tubing?
could you have been tubing?
could they have been tubing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not tube?
could you not tube?
could she not tube?
could we not tube?
could you not tube?
could they not tube? 	could I not be tubing?
could you not be tubing?
could she not be tubing?
could we not be tubing?
could you not be tubing?
could they not be tubing? 	could I not have tubed?
could you not have tubed?
could she not have tubed?
could we not have tubed?
could you not have tubed?
could they not have tubed? 	could I not have been tubing?
could you not have been tubing?
could she not have been tubing?
could we not have been tubing?
could you not have been tubing?
could they not have been tubing?