English verb conjugation
MAY SHIFT

Regular verb: shift - shifted - shifted

Affirmation

Simple form	V-ing form
I may shift you may shift she may shift we may shift you may shift they may shift	I may be shifting you may be shifting she may be shifting we may be shifting you may be shifting they may be shifting
Perfect	V-ing perfect
I may have shifted you may have shifted she may have shifted we may have shifted you may have shifted they may have shifted	I may have been shifting you may have been shifting she may have been shifting we may have been shifting you may have been shifting they may have been shifting

Negation

Simple form	V-ing form
I mayn't shift you mayn't shift she mayn't shift we mayn't shift you mayn't shift they mayn't shift	I mayn't be shifting you mayn't be shifting she mayn't be shifting we mayn't be shifting you mayn't be shifting they mayn't be shifting
Perfect	V-ing perfect
I mayn't have shifted you mayn't have shifted she mayn't have shifted we mayn't have shifted you mayn't have shifted they mayn't have shifted	I mayn't have been shifting you mayn't have been shifting she mayn't have been shifting we mayn't have been shifting you mayn't have been shifting they mayn't have been shifting

Interrogative form

Simple form	V-ing form
may I shift? may you shift? may she shift? may we shift? may you shift? may they shift?	may I be shifting? may you be shifting? may she be shifting? may we be shifting? may you be shifting? may they be shifting?
Perfect	V-ing perfect
may I have shifted? may you have shifted? may she have shifted? may we have shifted? may you have shifted? may they have shifted?	may I have been shifting? may you have been shifting? may she have been shifting? may we have been shifting? may you have been shifting? may they have been shifting?

Interro-negative form

Simple form	V-ing form
mayn't I shift? mayn't you shift? mayn't she shift? mayn't we shift? mayn't you shift? mayn't they shift?	mayn't I be shifting? mayn't you be shifting? mayn't she be shifting? mayn't we be shifting? mayn't you be shifting? mayn't they be shifting?
Perfect	V-ing perfect
mayn't I have shifted? mayn't you have shifted? mayn't she have shifted? mayn't we have shifted? mayn't you have shifted? mayn't they have shifted?	mayn't I have been shifting? mayn't you have been shifting? mayn't she have been shifting? mayn't we have been shifting? mayn't you have been shifting? mayn't they have been shifting?