can fever
Regular verb: fever - fevered- fevered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can fever
you can fever
she can fever
we can fever
you can fever
they can fever 	I can be fevering
you can be fevering
she can be fevering
we can be fevering
you can be fevering
they can be fevering	I can have fevered
you can have fevered
she can have fevered
we can have fevered
you can have fevered
they can have fevered	I can have been fevering
you can have been fevering
she can have been fevering
we can have been fevering
you can have been fevering
they can have been fevering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't fever
you can't fever
she can't fever
we can't fever
you can't fever
they can't fever 	I can't be fevering
you can't be fevering
she can't be fevering
we can't be fevering
you can't be fevering
they can't be fevering	I can't have fevered
you can't have fevered
she can't have fevered
we can't have fevered
you can't have fevered
they can't have fevered	I can't have been fevering
you can't have been fevering
she can't have been fevering
we can't have been fevering
you can't have been fevering
they can't have been fevering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I fever?
can you fever?
can she fever?
can we fever?
can you fever?
can they fever? 	can I be fevering?
can you be fevering?
can she be fevering?
can we be fevering?
can you be fevering?
can they be fevering? 	can I have fevered?
can you have fevered?
can she have fevered?
can we have fevered?
can you have fevered?
can they have fevered? 	can I have been fevering?
can you have been fevering?
can she have been fevering?
can we have been fevering?
can you have been fevering?
can they have been fevering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I fever?
can't you fever?
can't she fever?
can't we fever?
can't you fever?
can't they fever? 	can't I be fevering?
can't you be fevering?
can't she be fevering?
can't we be fevering?
can't you be fevering?
can't they be fevering? 	can't I have fevered?
can't you have fevered?
can't she have fevered?
can't we have fevered?
can't you have fevered?
can't they have fevered? 	can't I have been fevering?
can't you have been fevering?
can't she have been fevering?
can't we have been fevering?
can't you have been fevering?
can't they have been fevering?