I may cater you may cater he may cater we may cater you may cater they may cater
V-ing form
I may be catering you may be catering he may be catering we may be catering you may be catering they may be catering
Perfect
I may have catered you may have catered he may have catered we may have catered you may have catered they may have catered
V-ing perfect
I may have been catering you may have been catering he may have been catering we may have been catering you may have been catering they may have been catering
Negation
Simple form
I mayn't cater you mayn't cater he mayn't cater we mayn't cater you mayn't cater they mayn't cater
V-ing form
I mayn't be catering you mayn't be catering he mayn't be catering we mayn't be catering you mayn't be catering they mayn't be catering
Perfect
I mayn't have catered you mayn't have catered he mayn't have catered we mayn't have catered you mayn't have catered they mayn't have catered
V-ing perfect
I mayn't have been catering you mayn't have been catering he mayn't have been catering we mayn't have been catering you mayn't have been catering they mayn't have been catering
Interrogative form
Simple form
may I cater? may you cater? may he cater? may we cater? may you cater? may they cater?
V-ing form
may I be catering? may you be catering? may he be catering? may we be catering? may you be catering? may they be catering?
Perfect
may I have catered? may you have catered? may he have catered? may we have catered? may you have catered? may they have catered?
V-ing perfect
may I have been catering? may you have been catering? may he have been catering? may we have been catering? may you have been catering? may they have been catering?
Interro-negative form
Simple form
mayn't I cater? mayn't you cater? mayn't he cater? mayn't we cater? mayn't you cater? mayn't they cater?
V-ing form
mayn't I be catering? mayn't you be catering? mayn't he be catering? mayn't we be catering? mayn't you be catering? mayn't they be catering?
Perfect
mayn't I have catered? mayn't you have catered? mayn't he have catered? mayn't we have catered? mayn't you have catered? mayn't they have catered?
V-ing perfect
mayn't I have been catering? mayn't you have been catering? mayn't he have been catering? mayn't we have been catering? mayn't you have been catering? mayn't they have been catering?