English verb conjugation
COULD DEROGATE

Regular verb: derogate - derogated - derogated

Affirmation

Simple form	V-ing form
I could derogate you could derogate he could derogate we could derogate you could derogate they could derogate	I could be derogating you could be derogating he could be derogating we could be derogating you could be derogating they could be derogating
Perfect	V-ing perfect
I could have derogated you could have derogated he could have derogated we could have derogated you could have derogated they could have derogated	I could have been derogating you could have been derogating he could have been derogating we could have been derogating you could have been derogating they could have been derogating

Negation

Simple form	V-ing form
I couldn't derogate you couldn't derogate he couldn't derogate we couldn't derogate you couldn't derogate they couldn't derogate	I couldn't be derogating you couldn't be derogating he couldn't be derogating we couldn't be derogating you couldn't be derogating they couldn't be derogating
Perfect	V-ing perfect
I couldn't have derogated you couldn't have derogated he couldn't have derogated we couldn't have derogated you couldn't have derogated they couldn't have derogated	I couldn't have been derogating you couldn't have been derogating he couldn't have been derogating we couldn't have been derogating you couldn't have been derogating they couldn't have been derogating

Interrogative form

Simple form	V-ing form
could I derogate? could you derogate? could he derogate? could we derogate? could you derogate? could they derogate?	could I be derogating? could you be derogating? could he be derogating? could we be derogating? could you be derogating? could they be derogating?
Perfect	V-ing perfect
could I have derogated? could you have derogated? could he have derogated? could we have derogated? could you have derogated? could they have derogated?	could I have been derogating? could you have been derogating? could he have been derogating? could we have been derogating? could you have been derogating? could they have been derogating?

Interro-negative form

Simple form	V-ing form
couldn't I derogate? couldn't you derogate? couldn't he derogate? couldn't we derogate? couldn't you derogate? couldn't they derogate?	couldn't I be derogating? couldn't you be derogating? couldn't he be derogating? couldn't we be derogating? couldn't you be derogating? couldn't they be derogating?
Perfect	V-ing perfect
couldn't I have derogated? couldn't you have derogated? couldn't he have derogated? couldn't we have derogated? couldn't you have derogated? couldn't they have derogated?	couldn't I have been derogating? couldn't you have been derogating? couldn't he have been derogating? couldn't we have been derogating? couldn't you have been derogating? couldn't they have been derogating?