I may touch you may touch she may touch we may touch you may touch they may touch
V-ing form
I may be touching you may be touching she may be touching we may be touching you may be touching they may be touching
Perfect
I may have touched you may have touched she may have touched we may have touched you may have touched they may have touched
V-ing perfect
I may have been touching you may have been touching she may have been touching we may have been touching you may have been touching they may have been touching
Negation
Simple form
I may not touch you may not touch she may not touch we may not touch you may not touch they may not touch
V-ing form
I may not be touching you may not be touching she may not be touching we may not be touching you may not be touching they may not be touching
Perfect
I may not have touched you may not have touched she may not have touched we may not have touched you may not have touched they may not have touched
V-ing perfect
I may not have been touching you may not have been touching she may not have been touching we may not have been touching you may not have been touching they may not have been touching
Interrogative form
Simple form
may I touch? may you touch? may she touch? may we touch? may you touch? may they touch?
V-ing form
may I be touching? may you be touching? may she be touching? may we be touching? may you be touching? may they be touching?
Perfect
may I have touched? may you have touched? may she have touched? may we have touched? may you have touched? may they have touched?
V-ing perfect
may I have been touching? may you have been touching? may she have been touching? may we have been touching? may you have been touching? may they have been touching?
Interro-negative form
Simple form
may I not touch? may you not touch? may she not touch? may we not touch? may you not touch? may they not touch?
V-ing form
may I not be touching? may you not be touching? may she not be touching? may we not be touching? may you not be touching? may they not be touching?
Perfect
may I not have touched? may you not have touched? may she not have touched? may we not have touched? may you not have touched? may they not have touched?
V-ing perfect
may I not have been touching? may you not have been touching? may she not have been touching? may we not have been touching? may you not have been touching? may they not have been touching?