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