may umpire
Regular verb: umpire - umpired- umpired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may umpire
you may umpire
he may umpire
we may umpire
you may umpire
they may umpire 	I may be umpiring
you may be umpiring
he may be umpiring
we may be umpiring
you may be umpiring
they may be umpiring	I may have umpired
you may have umpired
he may have umpired
we may have umpired
you may have umpired
they may have umpired	I may have been umpiring
you may have been umpiring
he may have been umpiring
we may have been umpiring
you may have been umpiring
they may have been umpiring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't umpire
you mayn't umpire
he mayn't umpire
we mayn't umpire
you mayn't umpire
they mayn't umpire 	I mayn't be umpiring
you mayn't be umpiring
he mayn't be umpiring
we mayn't be umpiring
you mayn't be umpiring
they mayn't be umpiring	I mayn't have umpired
you mayn't have umpired
he mayn't have umpired
we mayn't have umpired
you mayn't have umpired
they mayn't have umpired	I mayn't have been umpiring
you mayn't have been umpiring
he mayn't have been umpiring
we mayn't have been umpiring
you mayn't have been umpiring
they mayn't have been umpiring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I umpire?
may you umpire?
may he umpire?
may we umpire?
may you umpire?
may they umpire? 	may I be umpiring?
may you be umpiring?
may he be umpiring?
may we be umpiring?
may you be umpiring?
may they be umpiring? 	may I have umpired?
may you have umpired?
may he have umpired?
may we have umpired?
may you have umpired?
may they have umpired? 	may I have been umpiring?
may you have been umpiring?
may he have been umpiring?
may we have been umpiring?
may you have been umpiring?
may they have been umpiring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I umpire?
mayn't you umpire?
mayn't he umpire?
mayn't we umpire?
mayn't you umpire?
mayn't they umpire? 	mayn't I be umpiring?
mayn't you be umpiring?
mayn't he be umpiring?
mayn't we be umpiring?
mayn't you be umpiring?
mayn't they be umpiring? 	mayn't I have umpired?
mayn't you have umpired?
mayn't he have umpired?
mayn't we have umpired?
mayn't you have umpired?
mayn't they have umpired? 	mayn't I have been umpiring?
mayn't you have been umpiring?
mayn't he have been umpiring?
mayn't we have been umpiring?
mayn't you have been umpiring?
mayn't they have been umpiring?