may scum
Regular verb: scum - scummed- scummed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may scum
you may scum
he may scum
we may scum
you may scum
they may scum 	I may be scumming
you may be scumming
he may be scumming
we may be scumming
you may be scumming
they may be scumming	I may have scummed
you may have scummed
he may have scummed
we may have scummed
you may have scummed
they may have scummed	I may have been scumming
you may have been scumming
he may have been scumming
we may have been scumming
you may have been scumming
they may have been scumming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't scum
you mayn't scum
he mayn't scum
we mayn't scum
you mayn't scum
they mayn't scum 	I mayn't be scumming
you mayn't be scumming
he mayn't be scumming
we mayn't be scumming
you mayn't be scumming
they mayn't be scumming	I mayn't have scummed
you mayn't have scummed
he mayn't have scummed
we mayn't have scummed
you mayn't have scummed
they mayn't have scummed	I mayn't have been scumming
you mayn't have been scumming
he mayn't have been scumming
we mayn't have been scumming
you mayn't have been scumming
they mayn't have been scumming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I scum?
may you scum?
may he scum?
may we scum?
may you scum?
may they scum? 	may I be scumming?
may you be scumming?
may he be scumming?
may we be scumming?
may you be scumming?
may they be scumming? 	may I have scummed?
may you have scummed?
may he have scummed?
may we have scummed?
may you have scummed?
may they have scummed? 	may I have been scumming?
may you have been scumming?
may he have been scumming?
may we have been scumming?
may you have been scumming?
may they have been scumming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I scum?
mayn't you scum?
mayn't he scum?
mayn't we scum?
mayn't you scum?
mayn't they scum? 	mayn't I be scumming?
mayn't you be scumming?
mayn't he be scumming?
mayn't we be scumming?
mayn't you be scumming?
mayn't they be scumming? 	mayn't I have scummed?
mayn't you have scummed?
mayn't he have scummed?
mayn't we have scummed?
mayn't you have scummed?
mayn't they have scummed? 	mayn't I have been scumming?
mayn't you have been scumming?
mayn't he have been scumming?
mayn't we have been scumming?
mayn't you have been scumming?
mayn't they have been scumming?