should percuss
Regular verb: percuss - percussed- percussed

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not percuss
you should not percuss
she should not percuss
we should not percuss
you should not percuss
they should not percuss 	I should not be percussing
you should not be percussing
she should not be percussing
we should not be percussing
you should not be percussing
they should not be percussing	I should not have percussed
you should not have percussed
she should not have percussed
we should not have percussed
you should not have percussed
they should not have percussed	I should not have been percussing
you should not have been percussing
she should not have been percussing
we should not have been percussing
you should not have been percussing
they should not have been percussing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I percuss?
should you percuss?
should she percuss?
should we percuss?
should you percuss?
should they percuss? 	should I be percussing?
should you be percussing?
should she be percussing?
should we be percussing?
should you be percussing?
should they be percussing? 	should I have percussed?
should you have percussed?
should she 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 she 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 	Perfect 	V-ing perfect 	
should I not percuss?
should you not percuss?
should she not percuss?
should we not percuss?
should you not percuss?
should they not percuss? 	should I not be percussing?
should you not be percussing?
should she not be percussing?
should we not be percussing?
should you not be percussing?
should they not be percussing? 	should I not have percussed?
should you not have percussed?
should she not have percussed?
should we not have percussed?
should you not have percussed?
should they not have percussed? 	should I not have been percussing?
should you not have been percussing?
should she not have been percussing?
should we not have been percussing?
should you not have been percussing?
should they not have been percussing?