English verb conjugation
MAY UMPIRE

Regular verb: umpire - umpired - umpired

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I may not umpire you may not umpire he may not umpire we may not umpire you may not umpire they may not umpire	I may not be umpiring you may not be umpiring he may not be umpiring we may not be umpiring you may not be umpiring they may not be umpiring
Perfect	V-ing perfect
I may not have umpired you may not have umpired he may not have umpired we may not have umpired you may not have umpired they may not have umpired	I may not have been umpiring you may not have been umpiring he may not have been umpiring we may not have been umpiring you may not have been umpiring they may not have been umpiring

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
may I not umpire? may you not umpire? may he not umpire? may we not umpire? may you not umpire? may they not umpire?	may I not be umpiring? may you not be umpiring? may he not be umpiring? may we not be umpiring? may you not be umpiring? may they not be umpiring?
Perfect	V-ing perfect
may I not have umpired? may you not have umpired? may he not have umpired? may we not have umpired? may you not have umpired? may they not have umpired?	may I not have been umpiring? may you not have been umpiring? may he not have been umpiring? may we not have been umpiring? may you not have been umpiring? may they not have been umpiring?