may percuss
Regular verb: percuss - percussed- percussed

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

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

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

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