may retread
Regular verb: retread - retreaded- retreaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may retread
you may retread
she may retread
we may retread
you may retread
they may retread 	I may be retreading
you may be retreading
she may be retreading
we may be retreading
you may be retreading
they may be retreading	I may have retreaded
you may have retreaded
she may have retreaded
we may have retreaded
you may have retreaded
they may have retreaded	I may have been retreading
you may have been retreading
she may have been retreading
we may have been retreading
you may have been retreading
they may have been retreading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't retread
you mayn't retread
she mayn't retread
we mayn't retread
you mayn't retread
they mayn't retread 	I mayn't be retreading
you mayn't be retreading
she mayn't be retreading
we mayn't be retreading
you mayn't be retreading
they mayn't be retreading	I mayn't have retreaded
you mayn't have retreaded
she mayn't have retreaded
we mayn't have retreaded
you mayn't have retreaded
they mayn't have retreaded	I mayn't have been retreading
you mayn't have been retreading
she mayn't have been retreading
we mayn't have been retreading
you mayn't have been retreading
they mayn't have been retreading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I retread?
may you retread?
may she retread?
may we retread?
may you retread?
may they retread? 	may I be retreading?
may you be retreading?
may she be retreading?
may we be retreading?
may you be retreading?
may they be retreading? 	may I have retreaded?
may you have retreaded?
may she have retreaded?
may we have retreaded?
may you have retreaded?
may they have retreaded? 	may I have been retreading?
may you have been retreading?
may she have been retreading?
may we have been retreading?
may you have been retreading?
may they have been retreading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I retread?
mayn't you retread?
mayn't she retread?
mayn't we retread?
mayn't you retread?
mayn't they retread? 	mayn't I be retreading?
mayn't you be retreading?
mayn't she be retreading?
mayn't we be retreading?
mayn't you be retreading?
mayn't they be retreading? 	mayn't I have retreaded?
mayn't you have retreaded?
mayn't she have retreaded?
mayn't we have retreaded?
mayn't you have retreaded?
mayn't they have retreaded? 	mayn't I have been retreading?
mayn't you have been retreading?
mayn't she have been retreading?
mayn't we have been retreading?
mayn't you have been retreading?
mayn't they have been retreading?