Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may cast off you may cast off he may cast off we may cast off you may cast off they may cast off
V-ing form
I may be cast offing you may be cast offing he may be cast offing we may be cast offing you may be cast offing they may be cast offing
Perfect
I may have cast offed you may have cast offed he may have cast offed we may have cast offed you may have cast offed they may have cast offed
V-ing perfect
I may have been cast offing you may have been cast offing he may have been cast offing we may have been cast offing you may have been cast offing they may have been cast offing
Negation
Simple form
I mayn't cast off you mayn't cast off he mayn't cast off we mayn't cast off you mayn't cast off they mayn't cast off
V-ing form
I mayn't be cast offing you mayn't be cast offing he mayn't be cast offing we mayn't be cast offing you mayn't be cast offing they mayn't be cast offing
Perfect
I mayn't have cast offed you mayn't have cast offed he mayn't have cast offed we mayn't have cast offed you mayn't have cast offed they mayn't have cast offed
V-ing perfect
I mayn't have been cast offing you mayn't have been cast offing he mayn't have been cast offing we mayn't have been cast offing you mayn't have been cast offing they mayn't have been cast offing
Interrogative form
Simple form
may I cast off? may you cast off? may he cast off? may we cast off? may you cast off? may they cast off?
V-ing form
may I be cast offing? may you be cast offing? may he be cast offing? may we be cast offing? may you be cast offing? may they be cast offing?
Perfect
may I have cast offed? may you have cast offed? may he have cast offed? may we have cast offed? may you have cast offed? may they have cast offed?
V-ing perfect
may I have been cast offing? may you have been cast offing? may he have been cast offing? may we have been cast offing? may you have been cast offing? may they have been cast offing?
Interro-negative form
Simple form
mayn't I cast off? mayn't you cast off? mayn't he cast off? mayn't we cast off? mayn't you cast off? mayn't they cast off?
V-ing form
mayn't I be cast offing? mayn't you be cast offing? mayn't he be cast offing? mayn't we be cast offing? mayn't you be cast offing? mayn't they be cast offing?
Perfect
mayn't I have cast offed? mayn't you have cast offed? mayn't he have cast offed? mayn't we have cast offed? mayn't you have cast offed? mayn't they have cast offed?
V-ing perfect
mayn't I have been cast offing? mayn't you have been cast offing? mayn't he have been cast offing? mayn't we have been cast offing? mayn't you have been cast offing? mayn't they have been cast offing?