English verb conjugation
COULD SUPEREROGATE

Regular verb: supererogate - supererogated - supererogated

Affirmation

Simple form	V-ing form
I could supererogate you could supererogate she could supererogate we could supererogate you could supererogate they could supererogate	I could be supererogating you could be supererogating she could be supererogating we could be supererogating you could be supererogating they could be supererogating
Perfect	V-ing perfect
I could have supererogated you could have supererogated she could have supererogated we could have supererogated you could have supererogated they could have supererogated	I could have been supererogating you could have been supererogating she could have been supererogating we could have been supererogating you could have been supererogating they could have been supererogating

Negation

Simple form	V-ing form
I couldn't supererogate you couldn't supererogate she couldn't supererogate we couldn't supererogate you couldn't supererogate they couldn't supererogate	I couldn't be supererogating you couldn't be supererogating she couldn't be supererogating we couldn't be supererogating you couldn't be supererogating they couldn't be supererogating
Perfect	V-ing perfect
I couldn't have supererogated you couldn't have supererogated she couldn't have supererogated we couldn't have supererogated you couldn't have supererogated they couldn't have supererogated	I couldn't have been supererogating you couldn't have been supererogating she couldn't have been supererogating we couldn't have been supererogating you couldn't have been supererogating they couldn't have been supererogating

Interrogative form

Simple form	V-ing form
could I supererogate? could you supererogate? could she supererogate? could we supererogate? could you supererogate? could they supererogate?	could I be supererogating? could you be supererogating? could she be supererogating? could we be supererogating? could you be supererogating? could they be supererogating?
Perfect	V-ing perfect
could I have supererogated? could you have supererogated? could she have supererogated? could we have supererogated? could you have supererogated? could they have supererogated?	could I have been supererogating? could you have been supererogating? could she have been supererogating? could we have been supererogating? could you have been supererogating? could they have been supererogating?

Interro-negative form

Simple form	V-ing form
couldn't I supererogate? couldn't you supererogate? couldn't she supererogate? couldn't we supererogate? couldn't you supererogate? couldn't they supererogate?	couldn't I be supererogating? couldn't you be supererogating? couldn't she be supererogating? couldn't we be supererogating? couldn't you be supererogating? couldn't they be supererogating?
Perfect	V-ing perfect
couldn't I have supererogated? couldn't you have supererogated? couldn't she have supererogated? couldn't we have supererogated? couldn't you have supererogated? couldn't they have supererogated?	couldn't I have been supererogating? couldn't you have been supererogating? couldn't she have been supererogating? couldn't we have been supererogating? couldn't you have been supererogating? couldn't they have been supererogating?