I may heckle you may heckle he may heckle we may heckle you may heckle they may heckle
V-ing form
I may be heckling you may be heckling he may be heckling we may be heckling you may be heckling they may be heckling
Perfect
I may have heckled you may have heckled he may have heckled we may have heckled you may have heckled they may have heckled
V-ing perfect
I may have been heckling you may have been heckling he may have been heckling we may have been heckling you may have been heckling they may have been heckling
Negation
Simple form
I may not heckle you may not heckle he may not heckle we may not heckle you may not heckle they may not heckle
V-ing form
I may not be heckling you may not be heckling he may not be heckling we may not be heckling you may not be heckling they may not be heckling
Perfect
I may not have heckled you may not have heckled he may not have heckled we may not have heckled you may not have heckled they may not have heckled
V-ing perfect
I may not have been heckling you may not have been heckling he may not have been heckling we may not have been heckling you may not have been heckling they may not have been heckling
Interrogative form
Simple form
may I heckle? may you heckle? may he heckle? may we heckle? may you heckle? may they heckle?
V-ing form
may I be heckling? may you be heckling? may he be heckling? may we be heckling? may you be heckling? may they be heckling?
Perfect
may I have heckled? may you have heckled? may he have heckled? may we have heckled? may you have heckled? may they have heckled?
V-ing perfect
may I have been heckling? may you have been heckling? may he have been heckling? may we have been heckling? may you have been heckling? may they have been heckling?
Interro-negative form
Simple form
may I not heckle? may you not heckle? may he not heckle? may we not heckle? may you not heckle? may they not heckle?
V-ing form
may I not be heckling? may you not be heckling? may he not be heckling? may we not be heckling? may you not be heckling? may they not be heckling?
Perfect
may I not have heckled? may you not have heckled? may he not have heckled? may we not have heckled? may you not have heckled? may they not have heckled?
V-ing perfect
may I not have been heckling? may you not have been heckling? may he not have been heckling? may we not have been heckling? may you not have been heckling? may they not have been heckling?