I may buckle you may buckle she may buckle we may buckle you may buckle they may buckle
V-ing form
I may be buckling you may be buckling she may be buckling we may be buckling you may be buckling they may be buckling
Perfect
I may have buckled you may have buckled she may have buckled we may have buckled you may have buckled they may have buckled
V-ing perfect
I may have been buckling you may have been buckling she may have been buckling we may have been buckling you may have been buckling they may have been buckling
Negation
Simple form
I may not buckle you may not buckle she may not buckle we may not buckle you may not buckle they may not buckle
V-ing form
I may not be buckling you may not be buckling she may not be buckling we may not be buckling you may not be buckling they may not be buckling
Perfect
I may not have buckled you may not have buckled she may not have buckled we may not have buckled you may not have buckled they may not have buckled
V-ing perfect
I may not have been buckling you may not have been buckling she may not have been buckling we may not have been buckling you may not have been buckling they may not have been buckling
Interrogative form
Simple form
may I buckle? may you buckle? may she buckle? may we buckle? may you buckle? may they buckle?
V-ing form
may I be buckling? may you be buckling? may she be buckling? may we be buckling? may you be buckling? may they be buckling?
Perfect
may I have buckled? may you have buckled? may she have buckled? may we have buckled? may you have buckled? may they have buckled?
V-ing perfect
may I have been buckling? may you have been buckling? may she have been buckling? may we have been buckling? may you have been buckling? may they have been buckling?
Interro-negative form
Simple form
may I not buckle? may you not buckle? may she not buckle? may we not buckle? may you not buckle? may they not buckle?
V-ing form
may I not be buckling? may you not be buckling? may she not be buckling? may we not be buckling? may you not be buckling? may they not be buckling?
Perfect
may I not have buckled? may you not have buckled? may she not have buckled? may we not have buckled? may you not have buckled? may they not have buckled?
V-ing perfect
may I not have been buckling? may you not have been buckling? may she not have been buckling? may we not have been buckling? may you not have been buckling? may they not have been buckling?