I may inquire you may inquire she may inquire we may inquire you may inquire they may inquire
V-ing form
I may be inquiring you may be inquiring she may be inquiring we may be inquiring you may be inquiring they may be inquiring
Perfect
I may have inquired you may have inquired she may have inquired we may have inquired you may have inquired they may have inquired
V-ing perfect
I may have been inquiring you may have been inquiring she may have been inquiring we may have been inquiring you may have been inquiring they may have been inquiring
Negation
Simple form
I may not inquire you may not inquire she may not inquire we may not inquire you may not inquire they may not inquire
V-ing form
I may not be inquiring you may not be inquiring she may not be inquiring we may not be inquiring you may not be inquiring they may not be inquiring
Perfect
I may not have inquired you may not have inquired she may not have inquired we may not have inquired you may not have inquired they may not have inquired
V-ing perfect
I may not have been inquiring you may not have been inquiring she may not have been inquiring we may not have been inquiring you may not have been inquiring they may not have been inquiring
Interrogative form
Simple form
may I inquire? may you inquire? may she inquire? may we inquire? may you inquire? may they inquire?
V-ing form
may I be inquiring? may you be inquiring? may she be inquiring? may we be inquiring? may you be inquiring? may they be inquiring?
Perfect
may I have inquired? may you have inquired? may she have inquired? may we have inquired? may you have inquired? may they have inquired?
V-ing perfect
may I have been inquiring? may you have been inquiring? may she have been inquiring? may we have been inquiring? may you have been inquiring? may they have been inquiring?
Interro-negative form
Simple form
may I not inquire? may you not inquire? may she not inquire? may we not inquire? may you not inquire? may they not inquire?
V-ing form
may I not be inquiring? may you not be inquiring? may she not be inquiring? may we not be inquiring? may you not be inquiring? may they not be inquiring?
Perfect
may I not have inquired? may you not have inquired? may she not have inquired? may we not have inquired? may you not have inquired? may they not have inquired?
V-ing perfect
may I not have been inquiring? may you not have been inquiring? may she not have been inquiring? may we not have been inquiring? may you not have been inquiring? may they not have been inquiring?