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 couldn't surveil you couldn't surveil he couldn't surveil we couldn't surveil you couldn't surveil they couldn't surveil	I couldn't be surveiling you couldn't be surveiling he couldn't be surveiling we couldn't be surveiling you couldn't be surveiling they couldn't be surveiling
Perfect	V-ing perfect
I couldn't have surveiled you couldn't have surveiled he couldn't have surveiled we couldn't have surveiled you couldn't have surveiled they couldn't have surveiled	I couldn't have been surveiling you couldn't have been surveiling he couldn't have been surveiling we couldn't have been surveiling you couldn't have been surveiling they couldn't 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
couldn't I surveil? couldn't you surveil? couldn't he surveil? couldn't we surveil? couldn't you surveil? couldn't they surveil?	couldn't I be surveiling? couldn't you be surveiling? couldn't he be surveiling? couldn't we be surveiling? couldn't you be surveiling? couldn't they be surveiling?
Perfect	V-ing perfect
couldn't I have surveiled? couldn't you have surveiled? couldn't he have surveiled? couldn't we have surveiled? couldn't you have surveiled? couldn't they have surveiled?	couldn't I have been surveiling? couldn't you have been surveiling? couldn't he have been surveiling? couldn't we have been surveiling? couldn't you have been surveiling? couldn't they have been surveiling?