I may screech you may screech he may screech we may screech you may screech they may screech
V-ing form
I may be screeching you may be screeching he may be screeching we may be screeching you may be screeching they may be screeching
Perfect
I may have screeched you may have screeched he may have screeched we may have screeched you may have screeched they may have screeched
V-ing perfect
I may have been screeching you may have been screeching he may have been screeching we may have been screeching you may have been screeching they may have been screeching
Negation
Simple form
I may not screech you may not screech he may not screech we may not screech you may not screech they may not screech
V-ing form
I may not be screeching you may not be screeching he may not be screeching we may not be screeching you may not be screeching they may not be screeching
Perfect
I may not have screeched you may not have screeched he may not have screeched we may not have screeched you may not have screeched they may not have screeched
V-ing perfect
I may not have been screeching you may not have been screeching he may not have been screeching we may not have been screeching you may not have been screeching they may not have been screeching
Interrogative form
Simple form
may I screech? may you screech? may he screech? may we screech? may you screech? may they screech?
V-ing form
may I be screeching? may you be screeching? may he be screeching? may we be screeching? may you be screeching? may they be screeching?
Perfect
may I have screeched? may you have screeched? may he have screeched? may we have screeched? may you have screeched? may they have screeched?
V-ing perfect
may I have been screeching? may you have been screeching? may he have been screeching? may we have been screeching? may you have been screeching? may they have been screeching?
Interro-negative form
Simple form
may I not screech? may you not screech? may he not screech? may we not screech? may you not screech? may they not screech?
V-ing form
may I not be screeching? may you not be screeching? may he not be screeching? may we not be screeching? may you not be screeching? may they not be screeching?
Perfect
may I not have screeched? may you not have screeched? may he not have screeched? may we not have screeched? may you not have screeched? may they not have screeched?
V-ing perfect
may I not have been screeching? may you not have been screeching? may he not have been screeching? may we not have been screeching? may you not have been screeching? may they not have been screeching?