English verb conjugation
CAN PREVAIL

Regular verb: prevail - prevailed - prevailed

Affirmation

Simple form	V-ing form
I can prevail you can prevail she can prevail we can prevail you can prevail they can prevail	I can be prevailing you can be prevailing she can be prevailing we can be prevailing you can be prevailing they can be prevailing
Perfect	V-ing perfect
I can have prevailed you can have prevailed she can have prevailed we can have prevailed you can have prevailed they can have prevailed	I can have been prevailing you can have been prevailing she can have been prevailing we can have been prevailing you can have been prevailing they can have been prevailing

Negation

Simple form	V-ing form
I can't prevail you can't prevail she can't prevail we can't prevail you can't prevail they can't prevail	I can't be prevailing you can't be prevailing she can't be prevailing we can't be prevailing you can't be prevailing they can't be prevailing
Perfect	V-ing perfect
I can't have prevailed you can't have prevailed she can't have prevailed we can't have prevailed you can't have prevailed they can't have prevailed	I can't have been prevailing you can't have been prevailing she can't have been prevailing we can't have been prevailing you can't have been prevailing they can't have been prevailing

Interrogative form

Simple form	V-ing form
can I prevail? can you prevail? can she prevail? can we prevail? can you prevail? can they prevail?	can I be prevailing? can you be prevailing? can she be prevailing? can we be prevailing? can you be prevailing? can they be prevailing?
Perfect	V-ing perfect
can I have prevailed? can you have prevailed? can she have prevailed? can we have prevailed? can you have prevailed? can they have prevailed?	can I have been prevailing? can you have been prevailing? can she have been prevailing? can we have been prevailing? can you have been prevailing? can they have been prevailing?

Interro-negative form

Simple form	V-ing form
can't I prevail? can't you prevail? can't she prevail? can't we prevail? can't you prevail? can't they prevail?	can't I be prevailing? can't you be prevailing? can't she be prevailing? can't we be prevailing? can't you be prevailing? can't they be prevailing?
Perfect	V-ing perfect
can't I have prevailed? can't you have prevailed? can't she have prevailed? can't we have prevailed? can't you have prevailed? can't they have prevailed?	can't I have been prevailing? can't you have been prevailing? can't she have been prevailing? can't we have been prevailing? can't you have been prevailing? can't they have been prevailing?