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