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