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