I may suck you may suck she may suck we may suck you may suck they may suck
V-ing form
I may be sucking you may be sucking she may be sucking we may be sucking you may be sucking they may be sucking
Perfect
I may have sucked you may have sucked she may have sucked we may have sucked you may have sucked they may have sucked
V-ing perfect
I may have been sucking you may have been sucking she may have been sucking we may have been sucking you may have been sucking they may have been sucking
Negation
Simple form
I mayn't suck you mayn't suck she mayn't suck we mayn't suck you mayn't suck they mayn't suck
V-ing form
I mayn't be sucking you mayn't be sucking she mayn't be sucking we mayn't be sucking you mayn't be sucking they mayn't be sucking
Perfect
I mayn't have sucked you mayn't have sucked she mayn't have sucked we mayn't have sucked you mayn't have sucked they mayn't have sucked
V-ing perfect
I mayn't have been sucking you mayn't have been sucking she mayn't have been sucking we mayn't have been sucking you mayn't have been sucking they mayn't have been sucking
Interrogative form
Simple form
may I suck? may you suck? may she suck? may we suck? may you suck? may they suck?
V-ing form
may I be sucking? may you be sucking? may she be sucking? may we be sucking? may you be sucking? may they be sucking?
Perfect
may I have sucked? may you have sucked? may she have sucked? may we have sucked? may you have sucked? may they have sucked?
V-ing perfect
may I have been sucking? may you have been sucking? may she have been sucking? may we have been sucking? may you have been sucking? may they have been sucking?
Interro-negative form
Simple form
mayn't I suck? mayn't you suck? mayn't she suck? mayn't we suck? mayn't you suck? mayn't they suck?
V-ing form
mayn't I be sucking? mayn't you be sucking? mayn't she be sucking? mayn't we be sucking? mayn't you be sucking? mayn't they be sucking?
Perfect
mayn't I have sucked? mayn't you have sucked? mayn't she have sucked? mayn't we have sucked? mayn't you have sucked? mayn't they have sucked?
V-ing perfect
mayn't I have been sucking? mayn't you have been sucking? mayn't she have been sucking? mayn't we have been sucking? mayn't you have been sucking? mayn't they have been sucking?