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