I may derive you may derive he may derive we may derive you may derive they may derive
V-ing form
I may be deriving you may be deriving he may be deriving we may be deriving you may be deriving they may be deriving
Perfect
I may have derived you may have derived he may have derived we may have derived you may have derived they may have derived
V-ing perfect
I may have been deriving you may have been deriving he may have been deriving we may have been deriving you may have been deriving they may have been deriving
Negation
Simple form
I mayn't derive you mayn't derive he mayn't derive we mayn't derive you mayn't derive they mayn't derive
V-ing form
I mayn't be deriving you mayn't be deriving he mayn't be deriving we mayn't be deriving you mayn't be deriving they mayn't be deriving
Perfect
I mayn't have derived you mayn't have derived he mayn't have derived we mayn't have derived you mayn't have derived they mayn't have derived
V-ing perfect
I mayn't have been deriving you mayn't have been deriving he mayn't have been deriving we mayn't have been deriving you mayn't have been deriving they mayn't have been deriving
Interrogative form
Simple form
may I derive? may you derive? may he derive? may we derive? may you derive? may they derive?
V-ing form
may I be deriving? may you be deriving? may he be deriving? may we be deriving? may you be deriving? may they be deriving?
Perfect
may I have derived? may you have derived? may he have derived? may we have derived? may you have derived? may they have derived?
V-ing perfect
may I have been deriving? may you have been deriving? may he have been deriving? may we have been deriving? may you have been deriving? may they have been deriving?
Interro-negative form
Simple form
mayn't I derive? mayn't you derive? mayn't he derive? mayn't we derive? mayn't you derive? mayn't they derive?
V-ing form
mayn't I be deriving? mayn't you be deriving? mayn't he be deriving? mayn't we be deriving? mayn't you be deriving? mayn't they be deriving?
Perfect
mayn't I have derived? mayn't you have derived? mayn't he have derived? mayn't we have derived? mayn't you have derived? mayn't they have derived?
V-ing perfect
mayn't I have been deriving? mayn't you have been deriving? mayn't he have been deriving? mayn't we have been deriving? mayn't you have been deriving? mayn't they have been deriving?