I may befall you may befall he may befall we may befall you may befall they may befall
V-ing form
I may be befalling you may be befalling he may be befalling we may be befalling you may be befalling they may be befalling
Perfect
I may have befallen you may have befallen he may have befallen we may have befallen you may have befallen they may have befallen
V-ing perfect
I may have been befalling you may have been befalling he may have been befalling we may have been befalling you may have been befalling they may have been befalling
Negation
Simple form
I may not befall you may not befall he may not befall we may not befall you may not befall they may not befall
V-ing form
I may not be befalling you may not be befalling he may not be befalling we may not be befalling you may not be befalling they may not be befalling
Perfect
I may not have befallen you may not have befallen he may not have befallen we may not have befallen you may not have befallen they may not have befallen
V-ing perfect
I may not have been befalling you may not have been befalling he may not have been befalling we may not have been befalling you may not have been befalling they may not have been befalling
Interrogative form
Simple form
may I befall? may you befall? may he befall? may we befall? may you befall? may they befall?
V-ing form
may I be befalling? may you be befalling? may he be befalling? may we be befalling? may you be befalling? may they be befalling?
Perfect
may I have befallen? may you have befallen? may he have befallen? may we have befallen? may you have befallen? may they have befallen?
V-ing perfect
may I have been befalling? may you have been befalling? may he have been befalling? may we have been befalling? may you have been befalling? may they have been befalling?
Interro-negative form
Simple form
may I not befall? may you not befall? may he not befall? may we not befall? may you not befall? may they not befall?
V-ing form
may I not be befalling? may you not be befalling? may he not be befalling? may we not be befalling? may you not be befalling? may they not be befalling?
Perfect
may I not have befallen? may you not have befallen? may he not have befallen? may we not have befallen? may you not have befallen? may they not have befallen?
V-ing perfect
may I not have been befalling? may you not have been befalling? may he not have been befalling? may we not have been befalling? may you not have been befalling? may they not have been befalling?