English verb conjugation
COULD ANTIQUATE

Regular verb: antiquate - antiquated - antiquated

Affirmation

Simple form	V-ing form
I could antiquate you could antiquate he could antiquate we could antiquate you could antiquate they could antiquate	I could be antiquating you could be antiquating he could be antiquating we could be antiquating you could be antiquating they could be antiquating
Perfect	V-ing perfect
I could have antiquated you could have antiquated he could have antiquated we could have antiquated you could have antiquated they could have antiquated	I could have been antiquating you could have been antiquating he could have been antiquating we could have been antiquating you could have been antiquating they could have been antiquating

Negation

Simple form	V-ing form
I could not antiquate you could not antiquate he could not antiquate we could not antiquate you could not antiquate they could not antiquate	I could not be antiquating you could not be antiquating he could not be antiquating we could not be antiquating you could not be antiquating they could not be antiquating
Perfect	V-ing perfect
I could not have antiquated you could not have antiquated he could not have antiquated we could not have antiquated you could not have antiquated they could not have antiquated	I could not have been antiquating you could not have been antiquating he could not have been antiquating we could not have been antiquating you could not have been antiquating they could not have been antiquating

Interrogative form

Simple form	V-ing form
could I antiquate? could you antiquate? could he antiquate? could we antiquate? could you antiquate? could they antiquate?	could I be antiquating? could you be antiquating? could he be antiquating? could we be antiquating? could you be antiquating? could they be antiquating?
Perfect	V-ing perfect
could I have antiquated? could you have antiquated? could he have antiquated? could we have antiquated? could you have antiquated? could they have antiquated?	could I have been antiquating? could you have been antiquating? could he have been antiquating? could we have been antiquating? could you have been antiquating? could they have been antiquating?

Interro-negative form

Simple form	V-ing form
could I not antiquate? could you not antiquate? could he not antiquate? could we not antiquate? could you not antiquate? could they not antiquate?	could I not be antiquating? could you not be antiquating? could he not be antiquating? could we not be antiquating? could you not be antiquating? could they not be antiquating?
Perfect	V-ing perfect
could I not have antiquated? could you not have antiquated? could he not have antiquated? could we not have antiquated? could you not have antiquated? could they not have antiquated?	could I not have been antiquating? could you not have been antiquating? could he not have been antiquating? could we not have been antiquating? could you not have been antiquating? could they not have been antiquating?