can slumber
Regular verb: slumber - slumbered- slumbered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can slumber
you can slumber
she can slumber
we can slumber
you can slumber
they can slumber 	I can be slumbering
you can be slumbering
she can be slumbering
we can be slumbering
you can be slumbering
they can be slumbering	I can have slumbered
you can have slumbered
she can have slumbered
we can have slumbered
you can have slumbered
they can have slumbered	I can have been slumbering
you can have been slumbering
she can have been slumbering
we can have been slumbering
you can have been slumbering
they can have been slumbering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot slumber
you cannot slumber
she cannot slumber
we cannot slumber
you cannot slumber
they cannot slumber 	I cannot be slumbering
you cannot be slumbering
she cannot be slumbering
we cannot be slumbering
you cannot be slumbering
they cannot be slumbering	I cannot have slumbered
you cannot have slumbered
she cannot have slumbered
we cannot have slumbered
you cannot have slumbered
they cannot have slumbered	I cannot have been slumbering
you cannot have been slumbering
she cannot have been slumbering
we cannot have been slumbering
you cannot have been slumbering
they cannot have been slumbering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I slumber?
can you slumber?
can she slumber?
can we slumber?
can you slumber?
can they slumber? 	can I be slumbering?
can you be slumbering?
can she be slumbering?
can we be slumbering?
can you be slumbering?
can they be slumbering? 	can I have slumbered?
can you have slumbered?
can she have slumbered?
can we have slumbered?
can you have slumbered?
can they have slumbered? 	can I have been slumbering?
can you have been slumbering?
can she have been slumbering?
can we have been slumbering?
can you have been slumbering?
can they have been slumbering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not slumber?
can you not slumber?
can she not slumber?
can we not slumber?
can you not slumber?
can they not slumber? 	can I not be slumbering?
can you not be slumbering?
can she not be slumbering?
can we not be slumbering?
can you not be slumbering?
can they not be slumbering? 	can I not have slumbered?
can you not have slumbered?
can she not have slumbered?
can we not have slumbered?
can you not have slumbered?
can they not have slumbered? 	can I not have been slumbering?
can you not have been slumbering?
can she not have been slumbering?
can we not have been slumbering?
can you not have been slumbering?
can they not have been slumbering?