I may trek you may trek she may trek we may trek you may trek they may trek
V-ing form
I may be trekking you may be trekking she may be trekking we may be trekking you may be trekking they may be trekking
Perfect
I may have trekked you may have trekked she may have trekked we may have trekked you may have trekked they may have trekked
V-ing perfect
I may have been trekking you may have been trekking she may have been trekking we may have been trekking you may have been trekking they may have been trekking
Negation
Simple form
I may not trek you may not trek she may not trek we may not trek you may not trek they may not trek
V-ing form
I may not be trekking you may not be trekking she may not be trekking we may not be trekking you may not be trekking they may not be trekking
Perfect
I may not have trekked you may not have trekked she may not have trekked we may not have trekked you may not have trekked they may not have trekked
V-ing perfect
I may not have been trekking you may not have been trekking she may not have been trekking we may not have been trekking you may not have been trekking they may not have been trekking
Interrogative form
Simple form
may I trek? may you trek? may she trek? may we trek? may you trek? may they trek?
V-ing form
may I be trekking? may you be trekking? may she be trekking? may we be trekking? may you be trekking? may they be trekking?
Perfect
may I have trekked? may you have trekked? may she have trekked? may we have trekked? may you have trekked? may they have trekked?
V-ing perfect
may I have been trekking? may you have been trekking? may she have been trekking? may we have been trekking? may you have been trekking? may they have been trekking?
Interro-negative form
Simple form
may I not trek? may you not trek? may she not trek? may we not trek? may you not trek? may they not trek?
V-ing form
may I not be trekking? may you not be trekking? may she not be trekking? may we not be trekking? may you not be trekking? may they not be trekking?
Perfect
may I not have trekked? may you not have trekked? may she not have trekked? may we not have trekked? may you not have trekked? may they not have trekked?
V-ing perfect
may I not have been trekking? may you not have been trekking? may she not have been trekking? may we not have been trekking? may you not have been trekking? may they not have been trekking?