English verb conjugation
SHOULD PERCUSS

Regular verb: percuss - percussed - percussed

Affirmation

Simple form	V-ing form
I'd percuss you'd percuss he'd percuss we'd percuss you'd percuss they'd percuss	I'd be percussing you'd be percussing he'd be percussing we'd be percussing you'd be percussing they'd be percussing
Perfect	V-ing perfect
I should've percussed you should've percussed he should've percussed we should've percussed you should've percussed they should've percussed	I should've been percussing you should've been percussing he should've been percussing we should've been percussing you should've been percussing they should've been percussing

Negation

Simple form	V-ing form
I shouldn't percuss you shouldn't percuss he shouldn't percuss we shouldn't percuss you shouldn't percuss they shouldn't percuss	I shouldn't be percussing you shouldn't be percussing he shouldn't be percussing we shouldn't be percussing you shouldn't be percussing they shouldn't be percussing
Perfect	V-ing perfect
I shouldn't have percussed you shouldn't have percussed he shouldn't have percussed we shouldn't have percussed you shouldn't have percussed they shouldn't have percussed	I shouldn't have been percussing you shouldn't have been percussing he shouldn't have been percussing we shouldn't have been percussing you shouldn't have been percussing they shouldn't have been percussing

Interrogative form

Simple form	V-ing form
should I percuss? should you percuss? should he percuss? should we percuss? should you percuss? should they percuss?	should I be percussing? should you be percussing? should he be percussing? should we be percussing? should you be percussing? should they be percussing?
Perfect	V-ing perfect
should I have percussed? should you have percussed? should he have percussed? should we have percussed? should you have percussed? should they have percussed?	should I have been percussing? should you have been percussing? should he have been percussing? should we have been percussing? should you have been percussing? should they have been percussing?

Interro-negative form

Simple form	V-ing form
shouldn't I percuss? shouldn't you percuss? shouldn't he percuss? shouldn't we percuss? shouldn't you percuss? shouldn't they percuss?	shouldn't I be percussing? shouldn't you be percussing? shouldn't he be percussing? shouldn't we be percussing? shouldn't you be percussing? shouldn't they be percussing?
Perfect	V-ing perfect
shouldn't I have percussed? shouldn't you have percussed? shouldn't he have percussed? shouldn't we have percussed? shouldn't you have percussed? shouldn't they have percussed?	shouldn't I have been percussing? shouldn't you have been percussing? shouldn't he have been percussing? shouldn't we have been percussing? shouldn't you have been percussing? shouldn't they have been percussing?