English verb conjugation
CAN QUIVER

Regular verb: quiver - quivered - quivered

Affirmation

Simple form	V-ing form
I can quiver you can quiver she can quiver we can quiver you can quiver they can quiver	I can be quivering you can be quivering she can be quivering we can be quivering you can be quivering they can be quivering
Perfect	V-ing perfect
I can have quivered you can have quivered she can have quivered we can have quivered you can have quivered they can have quivered	I can have been quivering you can have been quivering she can have been quivering we can have been quivering you can have been quivering they can have been quivering

Negation

Simple form	V-ing form
I cannot quiver you cannot quiver she cannot quiver we cannot quiver you cannot quiver they cannot quiver	I cannot be quivering you cannot be quivering she cannot be quivering we cannot be quivering you cannot be quivering they cannot be quivering
Perfect	V-ing perfect
I cannot have quivered you cannot have quivered she cannot have quivered we cannot have quivered you cannot have quivered they cannot have quivered	I cannot have been quivering you cannot have been quivering she cannot have been quivering we cannot have been quivering you cannot have been quivering they cannot have been quivering

Interrogative form

Simple form	V-ing form
can I quiver? can you quiver? can she quiver? can we quiver? can you quiver? can they quiver?	can I be quivering? can you be quivering? can she be quivering? can we be quivering? can you be quivering? can they be quivering?
Perfect	V-ing perfect
can I have quivered? can you have quivered? can she have quivered? can we have quivered? can you have quivered? can they have quivered?	can I have been quivering? can you have been quivering? can she have been quivering? can we have been quivering? can you have been quivering? can they have been quivering?

Interro-negative form

Simple form	V-ing form
can I not quiver? can you not quiver? can she not quiver? can we not quiver? can you not quiver? can they not quiver?	can I not be quivering? can you not be quivering? can she not be quivering? can we not be quivering? can you not be quivering? can they not be quivering?
Perfect	V-ing perfect
can I not have quivered? can you not have quivered? can she not have quivered? can we not have quivered? can you not have quivered? can they not have quivered?	can I not have been quivering? can you not have been quivering? can she not have been quivering? can we not have been quivering? can you not have been quivering? can they not have been quivering?