may straiten
Regular verb: straiten - straitened- straitened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may straiten
you may straiten
she may straiten
we may straiten
you may straiten
they may straiten 	I may be straitening
you may be straitening
she may be straitening
we may be straitening
you may be straitening
they may be straitening	I may have straitened
you may have straitened
she may have straitened
we may have straitened
you may have straitened
they may have straitened	I may have been straitening
you may have been straitening
she may have been straitening
we may have been straitening
you may have been straitening
they may have been straitening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't straiten
you mayn't straiten
she mayn't straiten
we mayn't straiten
you mayn't straiten
they mayn't straiten 	I mayn't be straitening
you mayn't be straitening
she mayn't be straitening
we mayn't be straitening
you mayn't be straitening
they mayn't be straitening	I mayn't have straitened
you mayn't have straitened
she mayn't have straitened
we mayn't have straitened
you mayn't have straitened
they mayn't have straitened	I mayn't have been straitening
you mayn't have been straitening
she mayn't have been straitening
we mayn't have been straitening
you mayn't have been straitening
they mayn't have been straitening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I straiten?
may you straiten?
may she straiten?
may we straiten?
may you straiten?
may they straiten? 	may I be straitening?
may you be straitening?
may she be straitening?
may we be straitening?
may you be straitening?
may they be straitening? 	may I have straitened?
may you have straitened?
may she have straitened?
may we have straitened?
may you have straitened?
may they have straitened? 	may I have been straitening?
may you have been straitening?
may she have been straitening?
may we have been straitening?
may you have been straitening?
may they have been straitening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I straiten?
mayn't you straiten?
mayn't she straiten?
mayn't we straiten?
mayn't you straiten?
mayn't they straiten? 	mayn't I be straitening?
mayn't you be straitening?
mayn't she be straitening?
mayn't we be straitening?
mayn't you be straitening?
mayn't they be straitening? 	mayn't I have straitened?
mayn't you have straitened?
mayn't she have straitened?
mayn't we have straitened?
mayn't you have straitened?
mayn't they have straitened? 	mayn't I have been straitening?
mayn't you have been straitening?
mayn't she have been straitening?
mayn't we have been straitening?
mayn't you have been straitening?
mayn't they have been straitening?