I may fork you may fork she may fork we may fork you may fork they may fork
V-ing form
I may be forking you may be forking she may be forking we may be forking you may be forking they may be forking
Perfect
I may have forked you may have forked she may have forked we may have forked you may have forked they may have forked
V-ing perfect
I may have been forking you may have been forking she may have been forking we may have been forking you may have been forking they may have been forking
Negation
Simple form
I may not fork you may not fork she may not fork we may not fork you may not fork they may not fork
V-ing form
I may not be forking you may not be forking she may not be forking we may not be forking you may not be forking they may not be forking
Perfect
I may not have forked you may not have forked she may not have forked we may not have forked you may not have forked they may not have forked
V-ing perfect
I may not have been forking you may not have been forking she may not have been forking we may not have been forking you may not have been forking they may not have been forking
Interrogative form
Simple form
may I fork? may you fork? may she fork? may we fork? may you fork? may they fork?
V-ing form
may I be forking? may you be forking? may she be forking? may we be forking? may you be forking? may they be forking?
Perfect
may I have forked? may you have forked? may she have forked? may we have forked? may you have forked? may they have forked?
V-ing perfect
may I have been forking? may you have been forking? may she have been forking? may we have been forking? may you have been forking? may they have been forking?
Interro-negative form
Simple form
may I not fork? may you not fork? may she not fork? may we not fork? may you not fork? may they not fork?
V-ing form
may I not be forking? may you not be forking? may she not be forking? may we not be forking? may you not be forking? may they not be forking?
Perfect
may I not have forked? may you not have forked? may she not have forked? may we not have forked? may you not have forked? may they not have forked?
V-ing perfect
may I not have been forking? may you not have been forking? may she not have been forking? may we not have been forking? may you not have been forking? may they not have been forking?