English verb conjugation
CAN FEVER

Regular verb: fever - fevered - fevered

Affirmation

Simple form	V-ing form
I can fever you can fever he can fever we can fever you can fever they can fever	I can be fevering you can be fevering he 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 he 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 he 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 he 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 he 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 he 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 he 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 he fever? can we fever? can you fever? can they fever?	can I be fevering? can you be fevering? can he 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 he 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 he 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 he 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 he 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 he 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 he have been fevering? can't we have been fevering? can't you have been fevering? can't they have been fevering?