I may scratch you may scratch she may scratch we may scratch you may scratch they may scratch
V-ing form
I may be scratching you may be scratching she may be scratching we may be scratching you may be scratching they may be scratching
Perfect
I may have scratched you may have scratched she may have scratched we may have scratched you may have scratched they may have scratched
V-ing perfect
I may have been scratching you may have been scratching she may have been scratching we may have been scratching you may have been scratching they may have been scratching
Negation
Simple form
I mayn't scratch you mayn't scratch she mayn't scratch we mayn't scratch you mayn't scratch they mayn't scratch
V-ing form
I mayn't be scratching you mayn't be scratching she mayn't be scratching we mayn't be scratching you mayn't be scratching they mayn't be scratching
Perfect
I mayn't have scratched you mayn't have scratched she mayn't have scratched we mayn't have scratched you mayn't have scratched they mayn't have scratched
V-ing perfect
I mayn't have been scratching you mayn't have been scratching she mayn't have been scratching we mayn't have been scratching you mayn't have been scratching they mayn't have been scratching
Interrogative form
Simple form
may I scratch? may you scratch? may she scratch? may we scratch? may you scratch? may they scratch?
V-ing form
may I be scratching? may you be scratching? may she be scratching? may we be scratching? may you be scratching? may they be scratching?
Perfect
may I have scratched? may you have scratched? may she have scratched? may we have scratched? may you have scratched? may they have scratched?
V-ing perfect
may I have been scratching? may you have been scratching? may she have been scratching? may we have been scratching? may you have been scratching? may they have been scratching?
Interro-negative form
Simple form
mayn't I scratch? mayn't you scratch? mayn't she scratch? mayn't we scratch? mayn't you scratch? mayn't they scratch?
V-ing form
mayn't I be scratching? mayn't you be scratching? mayn't she be scratching? mayn't we be scratching? mayn't you be scratching? mayn't they be scratching?
Perfect
mayn't I have scratched? mayn't you have scratched? mayn't she have scratched? mayn't we have scratched? mayn't you have scratched? mayn't they have scratched?
V-ing perfect
mayn't I have been scratching? mayn't you have been scratching? mayn't she have been scratching? mayn't we have been scratching? mayn't you have been scratching? mayn't they have been scratching?