English verb conjugation
COULD PRESURVEY

Regular verb: presurvey - presurveyed - presurveyed

Affirmation

Simple form	V-ing form
I could presurvey you could presurvey he could presurvey we could presurvey you could presurvey they could presurvey	I could be presurveying you could be presurveying he could be presurveying we could be presurveying you could be presurveying they could be presurveying
Perfect	V-ing perfect
I could have presurveyed you could have presurveyed he could have presurveyed we could have presurveyed you could have presurveyed they could have presurveyed	I could have been presurveying you could have been presurveying he could have been presurveying we could have been presurveying you could have been presurveying they could have been presurveying

Negation

Simple form	V-ing form
I could not presurvey you could not presurvey he could not presurvey we could not presurvey you could not presurvey they could not presurvey	I could not be presurveying you could not be presurveying he could not be presurveying we could not be presurveying you could not be presurveying they could not be presurveying
Perfect	V-ing perfect
I could not have presurveyed you could not have presurveyed he could not have presurveyed we could not have presurveyed you could not have presurveyed they could not have presurveyed	I could not have been presurveying you could not have been presurveying he could not have been presurveying we could not have been presurveying you could not have been presurveying they could not have been presurveying

Interrogative form

Simple form	V-ing form
could I presurvey? could you presurvey? could he presurvey? could we presurvey? could you presurvey? could they presurvey?	could I be presurveying? could you be presurveying? could he be presurveying? could we be presurveying? could you be presurveying? could they be presurveying?
Perfect	V-ing perfect
could I have presurveyed? could you have presurveyed? could he have presurveyed? could we have presurveyed? could you have presurveyed? could they have presurveyed?	could I have been presurveying? could you have been presurveying? could he have been presurveying? could we have been presurveying? could you have been presurveying? could they have been presurveying?

Interro-negative form

Simple form	V-ing form
could I not presurvey? could you not presurvey? could he not presurvey? could we not presurvey? could you not presurvey? could they not presurvey?	could I not be presurveying? could you not be presurveying? could he not be presurveying? could we not be presurveying? could you not be presurveying? could they not be presurveying?
Perfect	V-ing perfect
could I not have presurveyed? could you not have presurveyed? could he not have presurveyed? could we not have presurveyed? could you not have presurveyed? could they not have presurveyed?	could I not have been presurveying? could you not have been presurveying? could he not have been presurveying? could we not have been presurveying? could you not have been presurveying? could they not have been presurveying?