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