I may fishtail you may fishtail he may fishtail we may fishtail you may fishtail they may fishtail
V-ing form
I may be fishtailing you may be fishtailing he may be fishtailing we may be fishtailing you may be fishtailing they may be fishtailing
Perfect
I may have fishtailed you may have fishtailed he may have fishtailed we may have fishtailed you may have fishtailed they may have fishtailed
V-ing perfect
I may have been fishtailing you may have been fishtailing he may have been fishtailing we may have been fishtailing you may have been fishtailing they may have been fishtailing
Negation
Simple form
I may not fishtail you may not fishtail he may not fishtail we may not fishtail you may not fishtail they may not fishtail
V-ing form
I may not be fishtailing you may not be fishtailing he may not be fishtailing we may not be fishtailing you may not be fishtailing they may not be fishtailing
Perfect
I may not have fishtailed you may not have fishtailed he may not have fishtailed we may not have fishtailed you may not have fishtailed they may not have fishtailed
V-ing perfect
I may not have been fishtailing you may not have been fishtailing he may not have been fishtailing we may not have been fishtailing you may not have been fishtailing they may not have been fishtailing
Interrogative form
Simple form
may I fishtail? may you fishtail? may he fishtail? may we fishtail? may you fishtail? may they fishtail?
V-ing form
may I be fishtailing? may you be fishtailing? may he be fishtailing? may we be fishtailing? may you be fishtailing? may they be fishtailing?
Perfect
may I have fishtailed? may you have fishtailed? may he have fishtailed? may we have fishtailed? may you have fishtailed? may they have fishtailed?
V-ing perfect
may I have been fishtailing? may you have been fishtailing? may he have been fishtailing? may we have been fishtailing? may you have been fishtailing? may they have been fishtailing?
Interro-negative form
Simple form
may I not fishtail? may you not fishtail? may he not fishtail? may we not fishtail? may you not fishtail? may they not fishtail?
V-ing form
may I not be fishtailing? may you not be fishtailing? may he not be fishtailing? may we not be fishtailing? may you not be fishtailing? may they not be fishtailing?
Perfect
may I not have fishtailed? may you not have fishtailed? may he not have fishtailed? may we not have fishtailed? may you not have fishtailed? may they not have fishtailed?
V-ing perfect
may I not have been fishtailing? may you not have been fishtailing? may he not have been fishtailing? may we not have been fishtailing? may you not have been fishtailing? may they not have been fishtailing?