can yack
Regelmä&szlig;iges Verb: yack - yacked- yacked

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I can yack
you can yack
she can yack
we can yack
you can yack
they can yack 	I can be yacking
you can be yacking
she can be yacking
we can be yacking
you can be yacking
they can be yacking	I can have yacked
you can have yacked
she can have yacked
we can have yacked
you can have yacked
they can have yacked	I can have been yacking
you can have been yacking
she can have been yacking
we can have been yacking
you can have been yacking
they can have been yacking	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I cannot yack
you cannot yack
she cannot yack
we cannot yack
you cannot yack
they cannot yack 	I cannot be yacking
you cannot be yacking
she cannot be yacking
we cannot be yacking
you cannot be yacking
they cannot be yacking	I cannot have yacked
you cannot have yacked
she cannot have yacked
we cannot have yacked
you cannot have yacked
they cannot have yacked	I cannot have been yacking
you cannot have been yacking
she cannot have been yacking
we cannot have been yacking
you cannot have been yacking
they cannot have been yacking	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I yack?
can you yack?
can she yack?
can we yack?
can you yack?
can they yack? 	can I be yacking?
can you be yacking?
can she be yacking?
can we be yacking?
can you be yacking?
can they be yacking? 	can I have yacked?
can you have yacked?
can she have yacked?
can we have yacked?
can you have yacked?
can they have yacked? 	can I have been yacking?
can you have been yacking?
can she have been yacking?
can we have been yacking?
can you have been yacking?
can they have been yacking? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I not yack?
can you not yack?
can she not yack?
can we not yack?
can you not yack?
can they not yack? 	can I not be yacking?
can you not be yacking?
can she not be yacking?
can we not be yacking?
can you not be yacking?
can they not be yacking? 	can I not have yacked?
can you not have yacked?
can she not have yacked?
can we not have yacked?
can you not have yacked?
can they not have yacked? 	can I not have been yacking?
can you not have been yacking?
can she not have been yacking?
can we not have been yacking?
can you not have been yacking?
can they not have been yacking?