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