may drowse
Regular verb: drowse - drowsed- drowsed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may drowse
you may drowse
he may drowse
we may drowse
you may drowse
they may drowse 	I may be drowsing
you may be drowsing
he may be drowsing
we may be drowsing
you may be drowsing
they may be drowsing	I may have drowsed
you may have drowsed
he may have drowsed
we may have drowsed
you may have drowsed
they may have drowsed	I may have been drowsing
you may have been drowsing
he may have been drowsing
we may have been drowsing
you may have been drowsing
they may have been drowsing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't drowse
you mayn't drowse
he mayn't drowse
we mayn't drowse
you mayn't drowse
they mayn't drowse 	I mayn't be drowsing
you mayn't be drowsing
he mayn't be drowsing
we mayn't be drowsing
you mayn't be drowsing
they mayn't be drowsing	I mayn't have drowsed
you mayn't have drowsed
he mayn't have drowsed
we mayn't have drowsed
you mayn't have drowsed
they mayn't have drowsed	I mayn't have been drowsing
you mayn't have been drowsing
he mayn't have been drowsing
we mayn't have been drowsing
you mayn't have been drowsing
they mayn't have been drowsing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I drowse?
may you drowse?
may he drowse?
may we drowse?
may you drowse?
may they drowse? 	may I be drowsing?
may you be drowsing?
may he be drowsing?
may we be drowsing?
may you be drowsing?
may they be drowsing? 	may I have drowsed?
may you have drowsed?
may he have drowsed?
may we have drowsed?
may you have drowsed?
may they have drowsed? 	may I have been drowsing?
may you have been drowsing?
may he have been drowsing?
may we have been drowsing?
may you have been drowsing?
may they have been drowsing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I drowse?
mayn't you drowse?
mayn't he drowse?
mayn't we drowse?
mayn't you drowse?
mayn't they drowse? 	mayn't I be drowsing?
mayn't you be drowsing?
mayn't he be drowsing?
mayn't we be drowsing?
mayn't you be drowsing?
mayn't they be drowsing? 	mayn't I have drowsed?
mayn't you have drowsed?
mayn't he have drowsed?
mayn't we have drowsed?
mayn't you have drowsed?
mayn't they have drowsed? 	mayn't I have been drowsing?
mayn't you have been drowsing?
mayn't he have been drowsing?
mayn't we have been drowsing?
mayn't you have been drowsing?
mayn't they have been drowsing?