can stack
Regelmä&szlig;iges Verb: stack - stacked- stacked

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I can stack
you can stack
she can stack
we can stack
you can stack
they can stack 	I can be stacking
you can be stacking
she can be stacking
we can be stacking
you can be stacking
they can be stacking	I can have stacked
you can have stacked
she can have stacked
we can have stacked
you can have stacked
they can have stacked	I can have been stacking
you can have been stacking
she can have been stacking
we can have been stacking
you can have been stacking
they can have been stacking	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I can't stack
you can't stack
she can't stack
we can't stack
you can't stack
they can't stack 	I can't be stacking
you can't be stacking
she can't be stacking
we can't be stacking
you can't be stacking
they can't be stacking	I can't have stacked
you can't have stacked
she can't have stacked
we can't have stacked
you can't have stacked
they can't have stacked	I can't have been stacking
you can't have been stacking
she can't have been stacking
we can't have been stacking
you can't have been stacking
they can't have been stacking	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I stack?
can you stack?
can she stack?
can we stack?
can you stack?
can they stack? 	can I be stacking?
can you be stacking?
can she be stacking?
can we be stacking?
can you be stacking?
can they be stacking? 	can I have stacked?
can you have stacked?
can she have stacked?
can we have stacked?
can you have stacked?
can they have stacked? 	can I have been stacking?
can you have been stacking?
can she have been stacking?
can we have been stacking?
can you have been stacking?
can they have been stacking? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can't I stack?
can't you stack?
can't she stack?
can't we stack?
can't you stack?
can't they stack? 	can't I be stacking?
can't you be stacking?
can't she be stacking?
can't we be stacking?
can't you be stacking?
can't they be stacking? 	can't I have stacked?
can't you have stacked?
can't she have stacked?
can't we have stacked?
can't you have stacked?
can't they have stacked? 	can't I have been stacking?
can't you have been stacking?
can't she have been stacking?
can't we have been stacking?
can't you have been stacking?
can't they have been stacking?