may dust
Regular verb: dust - dusted- dusted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may dust
you may dust
she may dust
we may dust
you may dust
they may dust 	I may be dusting
you may be dusting
she may be dusting
we may be dusting
you may be dusting
they may be dusting	I may have dusted
you may have dusted
she may have dusted
we may have dusted
you may have dusted
they may have dusted	I may have been dusting
you may have been dusting
she may have been dusting
we may have been dusting
you may have been dusting
they may have been dusting	

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

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