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 may not travel you may not travel she may not travel we may not travel you may not travel they may not travel
V-ing form
I may not be travelling you may not be travelling she may not be travelling we may not be travelling you may not be travelling they may not be travelling
Perfect
I may not have travelled you may not have travelled she may not have travelled we may not have travelled you may not have travelled they may not have travelled
V-ing perfect
I may not have been travelling you may not have been travelling she may not have been travelling we may not have been travelling you may not have been travelling they may not 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
may I not travel? may you not travel? may she not travel? may we not travel? may you not travel? may they not travel?
V-ing form
may I not be travelling? may you not be travelling? may she not be travelling? may we not be travelling? may you not be travelling? may they not be travelling?
Perfect
may I not have travelled? may you not have travelled? may she not have travelled? may we not have travelled? may you not have travelled? may they not have travelled?
V-ing perfect
may I not have been travelling? may you not have been travelling? may she not have been travelling? may we not have been travelling? may you not have been travelling? may they not have been travelling?