I may crouch you may crouch he may crouch we may crouch you may crouch they may crouch
V-ing form
I may be crouching you may be crouching he may be crouching we may be crouching you may be crouching they may be crouching
Perfect
I may have crouched you may have crouched he may have crouched we may have crouched you may have crouched they may have crouched
V-ing perfect
I may have been crouching you may have been crouching he may have been crouching we may have been crouching you may have been crouching they may have been crouching
Negation
Simple form
I may not crouch you may not crouch he may not crouch we may not crouch you may not crouch they may not crouch
V-ing form
I may not be crouching you may not be crouching he may not be crouching we may not be crouching you may not be crouching they may not be crouching
Perfect
I may not have crouched you may not have crouched he may not have crouched we may not have crouched you may not have crouched they may not have crouched
V-ing perfect
I may not have been crouching you may not have been crouching he may not have been crouching we may not have been crouching you may not have been crouching they may not have been crouching
Interrogative form
Simple form
may I crouch? may you crouch? may he crouch? may we crouch? may you crouch? may they crouch?
V-ing form
may I be crouching? may you be crouching? may he be crouching? may we be crouching? may you be crouching? may they be crouching?
Perfect
may I have crouched? may you have crouched? may he have crouched? may we have crouched? may you have crouched? may they have crouched?
V-ing perfect
may I have been crouching? may you have been crouching? may he have been crouching? may we have been crouching? may you have been crouching? may they have been crouching?
Interro-negative form
Simple form
may I not crouch? may you not crouch? may he not crouch? may we not crouch? may you not crouch? may they not crouch?
V-ing form
may I not be crouching? may you not be crouching? may he not be crouching? may we not be crouching? may you not be crouching? may they not be crouching?
Perfect
may I not have crouched? may you not have crouched? may he not have crouched? may we not have crouched? may you not have crouched? may they not have crouched?
V-ing perfect
may I not have been crouching? may you not have been crouching? may he not have been crouching? may we not have been crouching? may you not have been crouching? may they not have been crouching?