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