English verb conjugation
CAN FEVER

Regular verb: fever - fevered - fevered

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?