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