may shorten
Regular verb: shorten - shortened- shortened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may shorten
you may shorten
she may shorten
we may shorten
you may shorten
they may shorten 	I may be shortening
you may be shortening
she may be shortening
we may be shortening
you may be shortening
they may be shortening	I may have shortened
you may have shortened
she may have shortened
we may have shortened
you may have shortened
they may have shortened	I may have been shortening
you may have been shortening
she may have been shortening
we may have been shortening
you may have been shortening
they may have been shortening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't shorten
you mayn't shorten
she mayn't shorten
we mayn't shorten
you mayn't shorten
they mayn't shorten 	I mayn't be shortening
you mayn't be shortening
she mayn't be shortening
we mayn't be shortening
you mayn't be shortening
they mayn't be shortening	I mayn't have shortened
you mayn't have shortened
she mayn't have shortened
we mayn't have shortened
you mayn't have shortened
they mayn't have shortened	I mayn't have been shortening
you mayn't have been shortening
she mayn't have been shortening
we mayn't have been shortening
you mayn't have been shortening
they mayn't have been shortening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I shorten?
may you shorten?
may she shorten?
may we shorten?
may you shorten?
may they shorten? 	may I be shortening?
may you be shortening?
may she be shortening?
may we be shortening?
may you be shortening?
may they be shortening? 	may I have shortened?
may you have shortened?
may she have shortened?
may we have shortened?
may you have shortened?
may they have shortened? 	may I have been shortening?
may you have been shortening?
may she have been shortening?
may we have been shortening?
may you have been shortening?
may they have been shortening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I shorten?
mayn't you shorten?
mayn't she shorten?
mayn't we shorten?
mayn't you shorten?
mayn't they shorten? 	mayn't I be shortening?
mayn't you be shortening?
mayn't she be shortening?
mayn't we be shortening?
mayn't you be shortening?
mayn't they be shortening? 	mayn't I have shortened?
mayn't you have shortened?
mayn't she have shortened?
mayn't we have shortened?
mayn't you have shortened?
mayn't they have shortened? 	mayn't I have been shortening?
mayn't you have been shortening?
mayn't she have been shortening?
mayn't we have been shortening?
mayn't you have been shortening?
mayn't they have been shortening?