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