I may try you may try he may try we may try you may try they may try
V-ing form
I may be trying you may be trying he may be trying we may be trying you may be trying they may be trying
Perfect
I may have tried you may have tried he may have tried we may have tried you may have tried they may have tried
V-ing perfect
I may have been trying you may have been trying he may have been trying we may have been trying you may have been trying they may have been trying
Negation
Simple form
I mayn't try you mayn't try he mayn't try we mayn't try you mayn't try they mayn't try
V-ing form
I mayn't be trying you mayn't be trying he mayn't be trying we mayn't be trying you mayn't be trying they mayn't be trying
Perfect
I mayn't have tried you mayn't have tried he mayn't have tried we mayn't have tried you mayn't have tried they mayn't have tried
V-ing perfect
I mayn't have been trying you mayn't have been trying he mayn't have been trying we mayn't have been trying you mayn't have been trying they mayn't have been trying
Interrogative form
Simple form
may I try? may you try? may he try? may we try? may you try? may they try?
V-ing form
may I be trying? may you be trying? may he be trying? may we be trying? may you be trying? may they be trying?
Perfect
may I have tried? may you have tried? may he have tried? may we have tried? may you have tried? may they have tried?
V-ing perfect
may I have been trying? may you have been trying? may he have been trying? may we have been trying? may you have been trying? may they have been trying?
Interro-negative form
Simple form
mayn't I try? mayn't you try? mayn't he try? mayn't we try? mayn't you try? mayn't they try?
V-ing form
mayn't I be trying? mayn't you be trying? mayn't he be trying? mayn't we be trying? mayn't you be trying? mayn't they be trying?
Perfect
mayn't I have tried? mayn't you have tried? mayn't he have tried? mayn't we have tried? mayn't you have tried? mayn't they have tried?
V-ing perfect
mayn't I have been trying? mayn't you have been trying? mayn't he have been trying? mayn't we have been trying? mayn't you have been trying? mayn't they have been trying?