I may scale you may scale she may scale we may scale you may scale they may scale
V-ing form
I may be scaling you may be scaling she may be scaling we may be scaling you may be scaling they may be scaling
Perfect
I may have scaled you may have scaled she may have scaled we may have scaled you may have scaled they may have scaled
V-ing perfect
I may have been scaling you may have been scaling she may have been scaling we may have been scaling you may have been scaling they may have been scaling
Negation
Simple form
I may not scale you may not scale she may not scale we may not scale you may not scale they may not scale
V-ing form
I may not be scaling you may not be scaling she may not be scaling we may not be scaling you may not be scaling they may not be scaling
Perfect
I may not have scaled you may not have scaled she may not have scaled we may not have scaled you may not have scaled they may not have scaled
V-ing perfect
I may not have been scaling you may not have been scaling she may not have been scaling we may not have been scaling you may not have been scaling they may not have been scaling
Interrogative form
Simple form
may I scale? may you scale? may she scale? may we scale? may you scale? may they scale?
V-ing form
may I be scaling? may you be scaling? may she be scaling? may we be scaling? may you be scaling? may they be scaling?
Perfect
may I have scaled? may you have scaled? may she have scaled? may we have scaled? may you have scaled? may they have scaled?
V-ing perfect
may I have been scaling? may you have been scaling? may she have been scaling? may we have been scaling? may you have been scaling? may they have been scaling?
Interro-negative form
Simple form
may I not scale? may you not scale? may she not scale? may we not scale? may you not scale? may they not scale?
V-ing form
may I not be scaling? may you not be scaling? may she not be scaling? may we not be scaling? may you not be scaling? may they not be scaling?
Perfect
may I not have scaled? may you not have scaled? may she not have scaled? may we not have scaled? may you not have scaled? may they not have scaled?
V-ing perfect
may I not have been scaling? may you not have been scaling? may she not have been scaling? may we not have been scaling? may you not have been scaling? may they not have been scaling?