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