could thumb
Regelmä&szlig;iges Verb: thumb - thumbed- thumbed

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could thumb
you could thumb
he could thumb
we could thumb
you could thumb
they could thumb 	I could be thumbing
you could be thumbing
he could be thumbing
we could be thumbing
you could be thumbing
they could be thumbing	I could have thumbed
you could have thumbed
he could have thumbed
we could have thumbed
you could have thumbed
they could have thumbed	I could have been thumbing
you could have been thumbing
he could have been thumbing
we could have been thumbing
you could have been thumbing
they could have been thumbing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not thumb
you could not thumb
he could not thumb
we could not thumb
you could not thumb
they could not thumb 	I could not be thumbing
you could not be thumbing
he could not be thumbing
we could not be thumbing
you could not be thumbing
they could not be thumbing	I could not have thumbed
you could not have thumbed
he could not have thumbed
we could not have thumbed
you could not have thumbed
they could not have thumbed	I could not have been thumbing
you could not have been thumbing
he could not have been thumbing
we could not have been thumbing
you could not have been thumbing
they could not have been thumbing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I thumb?
could you thumb?
could he thumb?
could we thumb?
could you thumb?
could they thumb? 	could I be thumbing?
could you be thumbing?
could he be thumbing?
could we be thumbing?
could you be thumbing?
could they be thumbing? 	could I have thumbed?
could you have thumbed?
could he have thumbed?
could we have thumbed?
could you have thumbed?
could they have thumbed? 	could I have been thumbing?
could you have been thumbing?
could he have been thumbing?
could we have been thumbing?
could you have been thumbing?
could they have been thumbing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not thumb?
could you not thumb?
could he not thumb?
could we not thumb?
could you not thumb?
could they not thumb? 	could I not be thumbing?
could you not be thumbing?
could he not be thumbing?
could we not be thumbing?
could you not be thumbing?
could they not be thumbing? 	could I not have thumbed?
could you not have thumbed?
could he not have thumbed?
could we not have thumbed?
could you not have thumbed?
could they not have thumbed? 	could I not have been thumbing?
could you not have been thumbing?
could he not have been thumbing?
could we not have been thumbing?
could you not have been thumbing?
could they not have been thumbing?