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