I may grieve you may grieve he may grieve we may grieve you may grieve they may grieve
V-ing form
I may be grieving you may be grieving he may be grieving we may be grieving you may be grieving they may be grieving
Perfect
I may have grieved you may have grieved he may have grieved we may have grieved you may have grieved they may have grieved
V-ing perfect
I may have been grieving you may have been grieving he may have been grieving we may have been grieving you may have been grieving they may have been grieving
Negation
Simple form
I may not grieve you may not grieve he may not grieve we may not grieve you may not grieve they may not grieve
V-ing form
I may not be grieving you may not be grieving he may not be grieving we may not be grieving you may not be grieving they may not be grieving
Perfect
I may not have grieved you may not have grieved he may not have grieved we may not have grieved you may not have grieved they may not have grieved
V-ing perfect
I may not have been grieving you may not have been grieving he may not have been grieving we may not have been grieving you may not have been grieving they may not have been grieving
Interrogative form
Simple form
may I grieve? may you grieve? may he grieve? may we grieve? may you grieve? may they grieve?
V-ing form
may I be grieving? may you be grieving? may he be grieving? may we be grieving? may you be grieving? may they be grieving?
Perfect
may I have grieved? may you have grieved? may he have grieved? may we have grieved? may you have grieved? may they have grieved?
V-ing perfect
may I have been grieving? may you have been grieving? may he have been grieving? may we have been grieving? may you have been grieving? may they have been grieving?
Interro-negative form
Simple form
may I not grieve? may you not grieve? may he not grieve? may we not grieve? may you not grieve? may they not grieve?
V-ing form
may I not be grieving? may you not be grieving? may he not be grieving? may we not be grieving? may you not be grieving? may they not be grieving?
Perfect
may I not have grieved? may you not have grieved? may he not have grieved? may we not have grieved? may you not have grieved? may they not have grieved?
V-ing perfect
may I not have been grieving? may you not have been grieving? may he not have been grieving? may we not have been grieving? may you not have been grieving? may they not have been grieving?