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