I'd be fishtailing you'd be fishtailing he'd be fishtailing we'd be fishtailing you'd be fishtailing they'd be fishtailing
Perfect
I should've fishtailed you should've fishtailed he should've fishtailed we should've fishtailed you should've fishtailed they should've fishtailed
V-ing perfect
I should've been fishtailing you should've been fishtailing he should've been fishtailing we should've been fishtailing you should've been fishtailing they should've been fishtailing
Negation
Simple form
I shouldn't fishtail you shouldn't fishtail he shouldn't fishtail we shouldn't fishtail you shouldn't fishtail they shouldn't fishtail
V-ing form
I shouldn't be fishtailing you shouldn't be fishtailing he shouldn't be fishtailing we shouldn't be fishtailing you shouldn't be fishtailing they shouldn't be fishtailing
Perfect
I shouldn't have fishtailed you shouldn't have fishtailed he shouldn't have fishtailed we shouldn't have fishtailed you shouldn't have fishtailed they shouldn't have fishtailed
V-ing perfect
I shouldn't have been fishtailing you shouldn't have been fishtailing he shouldn't have been fishtailing we shouldn't have been fishtailing you shouldn't have been fishtailing they shouldn't have been fishtailing
Interrogative form
Simple form
should I fishtail? should you fishtail? should he fishtail? should we fishtail? should you fishtail? should they fishtail?
V-ing form
should I be fishtailing? should you be fishtailing? should he be fishtailing? should we be fishtailing? should you be fishtailing? should they be fishtailing?
Perfect
should I have fishtailed? should you have fishtailed? should he have fishtailed? should we have fishtailed? should you have fishtailed? should they have fishtailed?
V-ing perfect
should I have been fishtailing? should you have been fishtailing? should he have been fishtailing? should we have been fishtailing? should you have been fishtailing? should they have been fishtailing?
Interro-negative form
Simple form
shouldn't I fishtail? shouldn't you fishtail? shouldn't he fishtail? shouldn't we fishtail? shouldn't you fishtail? shouldn't they fishtail?
V-ing form
shouldn't I be fishtailing? shouldn't you be fishtailing? shouldn't he be fishtailing? shouldn't we be fishtailing? shouldn't you be fishtailing? shouldn't they be fishtailing?
Perfect
shouldn't I have fishtailed? shouldn't you have fishtailed? shouldn't he have fishtailed? shouldn't we have fishtailed? shouldn't you have fishtailed? shouldn't they have fishtailed?
V-ing perfect
shouldn't I have been fishtailing? shouldn't you have been fishtailing? shouldn't he have been fishtailing? shouldn't we have been fishtailing? shouldn't you have been fishtailing? shouldn't they have been fishtailing?