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