English verb conjugation
CAN DERIVE

Regular verb: derive - derived - derived

Affirmation

Simple form	V-ing form
I can derive you can derive he can derive we can derive you can derive they can derive	I can be deriving you can be deriving he can be deriving we can be deriving you can be deriving they can be deriving
Perfect	V-ing perfect
I can have derived you can have derived he can have derived we can have derived you can have derived they can have derived	I can have been deriving you can have been deriving he can have been deriving we can have been deriving you can have been deriving they can have been deriving

Negation

Simple form	V-ing form
I can't derive you can't derive he can't derive we can't derive you can't derive they can't derive	I can't be deriving you can't be deriving he can't be deriving we can't be deriving you can't be deriving they can't be deriving
Perfect	V-ing perfect
I can't have derived you can't have derived he can't have derived we can't have derived you can't have derived they can't have derived	I can't have been deriving you can't have been deriving he can't have been deriving we can't have been deriving you can't have been deriving they can't have been deriving

Interrogative form

Simple form	V-ing form
can I derive? can you derive? can he derive? can we derive? can you derive? can they derive?	can I be deriving? can you be deriving? can he be deriving? can we be deriving? can you be deriving? can they be deriving?
Perfect	V-ing perfect
can I have derived? can you have derived? can he have derived? can we have derived? can you have derived? can they have derived?	can I have been deriving? can you have been deriving? can he have been deriving? can we have been deriving? can you have been deriving? can they have been deriving?

Interro-negative form

Simple form	V-ing form
can't I derive? can't you derive? can't he derive? can't we derive? can't you derive? can't they derive?	can't I be deriving? can't you be deriving? can't he be deriving? can't we be deriving? can't you be deriving? can't they be deriving?
Perfect	V-ing perfect
can't I have derived? can't you have derived? can't he have derived? can't we have derived? can't you have derived? can't they have derived?	can't I have been deriving? can't you have been deriving? can't he have been deriving? can't we have been deriving? can't you have been deriving? can't they have been deriving?