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