may quaff
Regular verb: quaff - quaffed- quaffed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may quaff
you may quaff
she may quaff
we may quaff
you may quaff
they may quaff 	I may be quaffing
you may be quaffing
she may be quaffing
we may be quaffing
you may be quaffing
they may be quaffing	I may have quaffed
you may have quaffed
she may have quaffed
we may have quaffed
you may have quaffed
they may have quaffed	I may have been quaffing
you may have been quaffing
she may have been quaffing
we may have been quaffing
you may have been quaffing
they may have been quaffing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't quaff
you mayn't quaff
she mayn't quaff
we mayn't quaff
you mayn't quaff
they mayn't quaff 	I mayn't be quaffing
you mayn't be quaffing
she mayn't be quaffing
we mayn't be quaffing
you mayn't be quaffing
they mayn't be quaffing	I mayn't have quaffed
you mayn't have quaffed
she mayn't have quaffed
we mayn't have quaffed
you mayn't have quaffed
they mayn't have quaffed	I mayn't have been quaffing
you mayn't have been quaffing
she mayn't have been quaffing
we mayn't have been quaffing
you mayn't have been quaffing
they mayn't have been quaffing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I quaff?
may you quaff?
may she quaff?
may we quaff?
may you quaff?
may they quaff? 	may I be quaffing?
may you be quaffing?
may she be quaffing?
may we be quaffing?
may you be quaffing?
may they be quaffing? 	may I have quaffed?
may you have quaffed?
may she have quaffed?
may we have quaffed?
may you have quaffed?
may they have quaffed? 	may I have been quaffing?
may you have been quaffing?
may she have been quaffing?
may we have been quaffing?
may you have been quaffing?
may they have been quaffing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I quaff?
mayn't you quaff?
mayn't she quaff?
mayn't we quaff?
mayn't you quaff?
mayn't they quaff? 	mayn't I be quaffing?
mayn't you be quaffing?
mayn't she be quaffing?
mayn't we be quaffing?
mayn't you be quaffing?
mayn't they be quaffing? 	mayn't I have quaffed?
mayn't you have quaffed?
mayn't she have quaffed?
mayn't we have quaffed?
mayn't you have quaffed?
mayn't they have quaffed? 	mayn't I have been quaffing?
mayn't you have been quaffing?
mayn't she have been quaffing?
mayn't we have been quaffing?
mayn't you have been quaffing?
mayn't they have been quaffing?