English verb conjugation
CAN PERSEVERE

Regular verb: persevere - persevered - persevered

Affirmation

Simple form	V-ing form
I can persevere you can persevere she can persevere we can persevere you can persevere they can persevere	I can be persevering you can be persevering she can be persevering we can be persevering you can be persevering they can be persevering
Perfect	V-ing perfect
I can have persevered you can have persevered she can have persevered we can have persevered you can have persevered they can have persevered	I can have been persevering you can have been persevering she can have been persevering we can have been persevering you can have been persevering they can have been persevering

Negation

Simple form	V-ing form
I can't persevere you can't persevere she can't persevere we can't persevere you can't persevere they can't persevere	I can't be persevering you can't be persevering she can't be persevering we can't be persevering you can't be persevering they can't be persevering
Perfect	V-ing perfect
I can't have persevered you can't have persevered she can't have persevered we can't have persevered you can't have persevered they can't have persevered	I can't have been persevering you can't have been persevering she can't have been persevering we can't have been persevering you can't have been persevering they can't have been persevering

Interrogative form

Simple form	V-ing form
can I persevere? can you persevere? can she persevere? can we persevere? can you persevere? can they persevere?	can I be persevering? can you be persevering? can she be persevering? can we be persevering? can you be persevering? can they be persevering?
Perfect	V-ing perfect
can I have persevered? can you have persevered? can she have persevered? can we have persevered? can you have persevered? can they have persevered?	can I have been persevering? can you have been persevering? can she have been persevering? can we have been persevering? can you have been persevering? can they have been persevering?

Interro-negative form

Simple form	V-ing form
can't I persevere? can't you persevere? can't she persevere? can't we persevere? can't you persevere? can't they persevere?	can't I be persevering? can't you be persevering? can't she be persevering? can't we be persevering? can't you be persevering? can't they be persevering?
Perfect	V-ing perfect
can't I have persevered? can't you have persevered? can't she have persevered? can't we have persevered? can't you have persevered? can't they have persevered?	can't I have been persevering? can't you have been persevering? can't she have been persevering? can't we have been persevering? can't you have been persevering? can't they have been persevering?