may rack
Regular verb: rack - racked- racked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may rack
you may rack
she may rack
we may rack
you may rack
they may rack 	I may be racking
you may be racking
she may be racking
we may be racking
you may be racking
they may be racking	I may have racked
you may have racked
she may have racked
we may have racked
you may have racked
they may have racked	I may have been racking
you may have been racking
she may have been racking
we may have been racking
you may have been racking
they may have been racking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't rack
you mayn't rack
she mayn't rack
we mayn't rack
you mayn't rack
they mayn't rack 	I mayn't be racking
you mayn't be racking
she mayn't be racking
we mayn't be racking
you mayn't be racking
they mayn't be racking	I mayn't have racked
you mayn't have racked
she mayn't have racked
we mayn't have racked
you mayn't have racked
they mayn't have racked	I mayn't have been racking
you mayn't have been racking
she mayn't have been racking
we mayn't have been racking
you mayn't have been racking
they mayn't have been racking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I rack?
may you rack?
may she rack?
may we rack?
may you rack?
may they rack? 	may I be racking?
may you be racking?
may she be racking?
may we be racking?
may you be racking?
may they be racking? 	may I have racked?
may you have racked?
may she have racked?
may we have racked?
may you have racked?
may they have racked? 	may I have been racking?
may you have been racking?
may she have been racking?
may we have been racking?
may you have been racking?
may they have been racking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I rack?
mayn't you rack?
mayn't she rack?
mayn't we rack?
mayn't you rack?
mayn't they rack? 	mayn't I be racking?
mayn't you be racking?
mayn't she be racking?
mayn't we be racking?
mayn't you be racking?
mayn't they be racking? 	mayn't I have racked?
mayn't you have racked?
mayn't she have racked?
mayn't we have racked?
mayn't you have racked?
mayn't they have racked? 	mayn't I have been racking?
mayn't you have been racking?
mayn't she have been racking?
mayn't we have been racking?
mayn't you have been racking?
mayn't they have been racking?