can percuss
Regular verb: percuss - percussed- percussed

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't percuss
you can't percuss
she can't percuss
we can't percuss
you can't percuss
they can't percuss 	I can't be percussing
you can't be percussing
she can't be percussing
we can't be percussing
you can't be percussing
they can't be percussing	I can't have percussed
you can't have percussed
she can't have percussed
we can't have percussed
you can't have percussed
they can't have percussed	I can't have been percussing
you can't have been percussing
she can't have been percussing
we can't have been percussing
you can't have been percussing
they can't have been percussing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I percuss?
can you percuss?
can she percuss?
can we percuss?
can you percuss?
can they percuss? 	can I be percussing?
can you be percussing?
can she be percussing?
can we be percussing?
can you be percussing?
can they be percussing? 	can I have percussed?
can you have percussed?
can she have percussed?
can we have percussed?
can you have percussed?
can they have percussed? 	can I have been percussing?
can you have been percussing?
can she have been percussing?
can we have been percussing?
can you have been percussing?
can they have been percussing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I percuss?
can't you percuss?
can't she percuss?
can't we percuss?
can't you percuss?
can't they percuss? 	can't I be percussing?
can't you be percussing?
can't she be percussing?
can't we be percussing?
can't you be percussing?
can't they be percussing? 	can't I have percussed?
can't you have percussed?
can't she have percussed?
can't we have percussed?
can't you have percussed?
can't they have percussed? 	can't I have been percussing?
can't you have been percussing?
can't she have been percussing?
can't we have been percussing?
can't you have been percussing?
can't they have been percussing?