may mothball
Regular verb: mothball - mothballed- mothballed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may mothball
you may mothball
she may mothball
we may mothball
you may mothball
they may mothball 	I may be mothballing
you may be mothballing
she may be mothballing
we may be mothballing
you may be mothballing
they may be mothballing	I may have mothballed
you may have mothballed
she may have mothballed
we may have mothballed
you may have mothballed
they may have mothballed	I may have been mothballing
you may have been mothballing
she may have been mothballing
we may have been mothballing
you may have been mothballing
they may have been mothballing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't mothball
you mayn't mothball
she mayn't mothball
we mayn't mothball
you mayn't mothball
they mayn't mothball 	I mayn't be mothballing
you mayn't be mothballing
she mayn't be mothballing
we mayn't be mothballing
you mayn't be mothballing
they mayn't be mothballing	I mayn't have mothballed
you mayn't have mothballed
she mayn't have mothballed
we mayn't have mothballed
you mayn't have mothballed
they mayn't have mothballed	I mayn't have been mothballing
you mayn't have been mothballing
she mayn't have been mothballing
we mayn't have been mothballing
you mayn't have been mothballing
they mayn't have been mothballing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I mothball?
may you mothball?
may she mothball?
may we mothball?
may you mothball?
may they mothball? 	may I be mothballing?
may you be mothballing?
may she be mothballing?
may we be mothballing?
may you be mothballing?
may they be mothballing? 	may I have mothballed?
may you have mothballed?
may she have mothballed?
may we have mothballed?
may you have mothballed?
may they have mothballed? 	may I have been mothballing?
may you have been mothballing?
may she have been mothballing?
may we have been mothballing?
may you have been mothballing?
may they have been mothballing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I mothball?
mayn't you mothball?
mayn't she mothball?
mayn't we mothball?
mayn't you mothball?
mayn't they mothball? 	mayn't I be mothballing?
mayn't you be mothballing?
mayn't she be mothballing?
mayn't we be mothballing?
mayn't you be mothballing?
mayn't they be mothballing? 	mayn't I have mothballed?
mayn't you have mothballed?
mayn't she have mothballed?
mayn't we have mothballed?
mayn't you have mothballed?
mayn't they have mothballed? 	mayn't I have been mothballing?
mayn't you have been mothballing?
mayn't she have been mothballing?
mayn't we have been mothballing?
mayn't you have been mothballing?
mayn't they have been mothballing?