may sound
Regular verb: sound - sounded- sounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may sound
you may sound
he may sound
we may sound
you may sound
they may sound 	I may be sounding
you may be sounding
he may be sounding
we may be sounding
you may be sounding
they may be sounding	I may have sounded
you may have sounded
he may have sounded
we may have sounded
you may have sounded
they may have sounded	I may have been sounding
you may have been sounding
he may have been sounding
we may have been sounding
you may have been sounding
they may have been sounding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't sound
you mayn't sound
he mayn't sound
we mayn't sound
you mayn't sound
they mayn't sound 	I mayn't be sounding
you mayn't be sounding
he mayn't be sounding
we mayn't be sounding
you mayn't be sounding
they mayn't be sounding	I mayn't have sounded
you mayn't have sounded
he mayn't have sounded
we mayn't have sounded
you mayn't have sounded
they mayn't have sounded	I mayn't have been sounding
you mayn't have been sounding
he mayn't have been sounding
we mayn't have been sounding
you mayn't have been sounding
they mayn't have been sounding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I sound?
may you sound?
may he sound?
may we sound?
may you sound?
may they sound? 	may I be sounding?
may you be sounding?
may he be sounding?
may we be sounding?
may you be sounding?
may they be sounding? 	may I have sounded?
may you have sounded?
may he have sounded?
may we have sounded?
may you have sounded?
may they have sounded? 	may I have been sounding?
may you have been sounding?
may he have been sounding?
may we have been sounding?
may you have been sounding?
may they have been sounding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I sound?
mayn't you sound?
mayn't he sound?
mayn't we sound?
mayn't you sound?
mayn't they sound? 	mayn't I be sounding?
mayn't you be sounding?
mayn't he be sounding?
mayn't we be sounding?
mayn't you be sounding?
mayn't they be sounding? 	mayn't I have sounded?
mayn't you have sounded?
mayn't he have sounded?
mayn't we have sounded?
mayn't you have sounded?
mayn't they have sounded? 	mayn't I have been sounding?
mayn't you have been sounding?
mayn't he have been sounding?
mayn't we have been sounding?
mayn't you have been sounding?
mayn't they have been sounding?