English verb conjugation
COULD CAT

Regular verb: cat - cated - cated

Affirmation

Simple form	V-ing form
I could cat you could cat he could cat we could cat you could cat they could cat	I could be cating you could be cating he could be cating we could be cating you could be cating they could be cating
Perfect	V-ing perfect
I could have cated you could have cated he could have cated we could have cated you could have cated they could have cated	I could have been cating you could have been cating he could have been cating we could have been cating you could have been cating they could have been cating

Negation

Simple form	V-ing form
I could not cat you could not cat he could not cat we could not cat you could not cat they could not cat	I could not be cating you could not be cating he could not be cating we could not be cating you could not be cating they could not be cating
Perfect	V-ing perfect
I could not have cated you could not have cated he could not have cated we could not have cated you could not have cated they could not have cated	I could not have been cating you could not have been cating he could not have been cating we could not have been cating you could not have been cating they could not have been cating

Interrogative form

Simple form	V-ing form
could I cat? could you cat? could he cat? could we cat? could you cat? could they cat?	could I be cating? could you be cating? could he be cating? could we be cating? could you be cating? could they be cating?
Perfect	V-ing perfect
could I have cated? could you have cated? could he have cated? could we have cated? could you have cated? could they have cated?	could I have been cating? could you have been cating? could he have been cating? could we have been cating? could you have been cating? could they have been cating?

Interro-negative form

Simple form	V-ing form
could I not cat? could you not cat? could he not cat? could we not cat? could you not cat? could they not cat?	could I not be cating? could you not be cating? could he not be cating? could we not be cating? could you not be cating? could they not be cating?
Perfect	V-ing perfect
could I not have cated? could you not have cated? could he not have cated? could we not have cated? could you not have cated? could they not have cated?	could I not have been cating? could you not have been cating? could he not have been cating? could we not have been cating? could you not have been cating? could they not have been cating?