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 couldn't presurvey you couldn't presurvey he couldn't presurvey we couldn't presurvey you couldn't presurvey they couldn't presurvey	I couldn't be presurveying you couldn't be presurveying he couldn't be presurveying we couldn't be presurveying you couldn't be presurveying they couldn't be presurveying
Perfect	V-ing perfect
I couldn't have presurveyed you couldn't have presurveyed he couldn't have presurveyed we couldn't have presurveyed you couldn't have presurveyed they couldn't have presurveyed	I couldn't have been presurveying you couldn't have been presurveying he couldn't have been presurveying we couldn't have been presurveying you couldn't have been presurveying they couldn't 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
couldn't I presurvey? couldn't you presurvey? couldn't he presurvey? couldn't we presurvey? couldn't you presurvey? couldn't they presurvey?	couldn't I be presurveying? couldn't you be presurveying? couldn't he be presurveying? couldn't we be presurveying? couldn't you be presurveying? couldn't they be presurveying?
Perfect	V-ing perfect
couldn't I have presurveyed? couldn't you have presurveyed? couldn't he have presurveyed? couldn't we have presurveyed? couldn't you have presurveyed? couldn't they have presurveyed?	couldn't I have been presurveying? couldn't you have been presurveying? couldn't he have been presurveying? couldn't we have been presurveying? couldn't you have been presurveying? couldn't they have been presurveying?