English verb conjugation
COULD RE-FORM

Regular verb: re-form - re-formed - re-formed

Affirmation

Simple form	V-ing form
I could re-form you could re-form he could re-form we could re-form you could re-form they could re-form	I could be re-forming you could be re-forming he could be re-forming we could be re-forming you could be re-forming they could be re-forming
Perfect	V-ing perfect
I could have re-formed you could have re-formed he could have re-formed we could have re-formed you could have re-formed they could have re-formed	I could have been re-forming you could have been re-forming he could have been re-forming we could have been re-forming you could have been re-forming they could have been re-forming

Negation

Simple form	V-ing form
I couldn't re-form you couldn't re-form he couldn't re-form we couldn't re-form you couldn't re-form they couldn't re-form	I couldn't be re-forming you couldn't be re-forming he couldn't be re-forming we couldn't be re-forming you couldn't be re-forming they couldn't be re-forming
Perfect	V-ing perfect
I couldn't have re-formed you couldn't have re-formed he couldn't have re-formed we couldn't have re-formed you couldn't have re-formed they couldn't have re-formed	I couldn't have been re-forming you couldn't have been re-forming he couldn't have been re-forming we couldn't have been re-forming you couldn't have been re-forming they couldn't have been re-forming

Interrogative form

Simple form	V-ing form
could I re-form? could you re-form? could he re-form? could we re-form? could you re-form? could they re-form?	could I be re-forming? could you be re-forming? could he be re-forming? could we be re-forming? could you be re-forming? could they be re-forming?
Perfect	V-ing perfect
could I have re-formed? could you have re-formed? could he have re-formed? could we have re-formed? could you have re-formed? could they have re-formed?	could I have been re-forming? could you have been re-forming? could he have been re-forming? could we have been re-forming? could you have been re-forming? could they have been re-forming?

Interro-negative form

Simple form	V-ing form
couldn't I re-form? couldn't you re-form? couldn't he re-form? couldn't we re-form? couldn't you re-form? couldn't they re-form?	couldn't I be re-forming? couldn't you be re-forming? couldn't he be re-forming? couldn't we be re-forming? couldn't you be re-forming? couldn't they be re-forming?
Perfect	V-ing perfect
couldn't I have re-formed? couldn't you have re-formed? couldn't he have re-formed? couldn't we have re-formed? couldn't you have re-formed? couldn't they have re-formed?	couldn't I have been re-forming? couldn't you have been re-forming? couldn't he have been re-forming? couldn't we have been re-forming? couldn't you have been re-forming? couldn't they have been re-forming?