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