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