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