may execute
Regular verb: execute - executed- executed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may execute
you may execute
she may execute
we may execute
you may execute
they may execute 	I may be executing
you may be executing
she may be executing
we may be executing
you may be executing
they may be executing	I may have executed
you may have executed
she may have executed
we may have executed
you may have executed
they may have executed	I may have been executing
you may have been executing
she may have been executing
we may have been executing
you may have been executing
they may have been executing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't execute
you mayn't execute
she mayn't execute
we mayn't execute
you mayn't execute
they mayn't execute 	I mayn't be executing
you mayn't be executing
she mayn't be executing
we mayn't be executing
you mayn't be executing
they mayn't be executing	I mayn't have executed
you mayn't have executed
she mayn't have executed
we mayn't have executed
you mayn't have executed
they mayn't have executed	I mayn't have been executing
you mayn't have been executing
she mayn't have been executing
we mayn't have been executing
you mayn't have been executing
they mayn't have been executing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I execute?
may you execute?
may she execute?
may we execute?
may you execute?
may they execute? 	may I be executing?
may you be executing?
may she be executing?
may we be executing?
may you be executing?
may they be executing? 	may I have executed?
may you have executed?
may she have executed?
may we have executed?
may you have executed?
may they have executed? 	may I have been executing?
may you have been executing?
may she have been executing?
may we have been executing?
may you have been executing?
may they have been executing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I execute?
mayn't you execute?
mayn't she execute?
mayn't we execute?
mayn't you execute?
mayn't they execute? 	mayn't I be executing?
mayn't you be executing?
mayn't she be executing?
mayn't we be executing?
mayn't you be executing?
mayn't they be executing? 	mayn't I have executed?
mayn't you have executed?
mayn't she have executed?
mayn't we have executed?
mayn't you have executed?
mayn't they have executed? 	mayn't I have been executing?
mayn't you have been executing?
mayn't she have been executing?
mayn't we have been executing?
mayn't you have been executing?
mayn't they have been executing?