can wrack
Regular verb: wrack - wracked- wracked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can wrack
you can wrack
she can wrack
we can wrack
you can wrack
they can wrack 	I can be wracking
you can be wracking
she can be wracking
we can be wracking
you can be wracking
they can be wracking	I can have wracked
you can have wracked
she can have wracked
we can have wracked
you can have wracked
they can have wracked	I can have been wracking
you can have been wracking
she can have been wracking
we can have been wracking
you can have been wracking
they can have been wracking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot wrack
you cannot wrack
she cannot wrack
we cannot wrack
you cannot wrack
they cannot wrack 	I cannot be wracking
you cannot be wracking
she cannot be wracking
we cannot be wracking
you cannot be wracking
they cannot be wracking	I cannot have wracked
you cannot have wracked
she cannot have wracked
we cannot have wracked
you cannot have wracked
they cannot have wracked	I cannot have been wracking
you cannot have been wracking
she cannot have been wracking
we cannot have been wracking
you cannot have been wracking
they cannot have been wracking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I wrack?
can you wrack?
can she wrack?
can we wrack?
can you wrack?
can they wrack? 	can I be wracking?
can you be wracking?
can she be wracking?
can we be wracking?
can you be wracking?
can they be wracking? 	can I have wracked?
can you have wracked?
can she have wracked?
can we have wracked?
can you have wracked?
can they have wracked? 	can I have been wracking?
can you have been wracking?
can she have been wracking?
can we have been wracking?
can you have been wracking?
can they have been wracking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not wrack?
can you not wrack?
can she not wrack?
can we not wrack?
can you not wrack?
can they not wrack? 	can I not be wracking?
can you not be wracking?
can she not be wracking?
can we not be wracking?
can you not be wracking?
can they not be wracking? 	can I not have wracked?
can you not have wracked?
can she not have wracked?
can we not have wracked?
can you not have wracked?
can they not have wracked? 	can I not have been wracking?
can you not have been wracking?
can she not have been wracking?
can we not have been wracking?
can you not have been wracking?
can they not have been wracking?