English verb conjugation
COULD SURVEIL

Regular verb: surveil - surveiled - surveiled

Affirmation

Simple form	V-ing form
I could surveil you could surveil he could surveil we could surveil you could surveil they could surveil	I could be surveiling you could be surveiling he could be surveiling we could be surveiling you could be surveiling they could be surveiling
Perfect	V-ing perfect
I could have surveiled you could have surveiled he could have surveiled we could have surveiled you could have surveiled they could have surveiled	I could have been surveiling you could have been surveiling he could have been surveiling we could have been surveiling you could have been surveiling they could have been surveiling

Negation

Simple form	V-ing form
I could not surveil you could not surveil he could not surveil we could not surveil you could not surveil they could not surveil	I could not be surveiling you could not be surveiling he could not be surveiling we could not be surveiling you could not be surveiling they could not be surveiling
Perfect	V-ing perfect
I could not have surveiled you could not have surveiled he could not have surveiled we could not have surveiled you could not have surveiled they could not have surveiled	I could not have been surveiling you could not have been surveiling he could not have been surveiling we could not have been surveiling you could not have been surveiling they could not have been surveiling

Interrogative form

Simple form	V-ing form
could I surveil? could you surveil? could he surveil? could we surveil? could you surveil? could they surveil?	could I be surveiling? could you be surveiling? could he be surveiling? could we be surveiling? could you be surveiling? could they be surveiling?
Perfect	V-ing perfect
could I have surveiled? could you have surveiled? could he have surveiled? could we have surveiled? could you have surveiled? could they have surveiled?	could I have been surveiling? could you have been surveiling? could he have been surveiling? could we have been surveiling? could you have been surveiling? could they have been surveiling?

Interro-negative form

Simple form	V-ing form
could I not surveil? could you not surveil? could he not surveil? could we not surveil? could you not surveil? could they not surveil?	could I not be surveiling? could you not be surveiling? could he not be surveiling? could we not be surveiling? could you not be surveiling? could they not be surveiling?
Perfect	V-ing perfect
could I not have surveiled? could you not have surveiled? could he not have surveiled? could we not have surveiled? could you not have surveiled? could they not have surveiled?	could I not have been surveiling? could you not have been surveiling? could he not have been surveiling? could we not have been surveiling? could you not have been surveiling? could they not have been surveiling?