English verb conjugation
COULD SCRUTINIZE

Regular verb: scrutinize - scrutinized - scrutinized

Affirmation

Simple form	V-ing form
I could scrutinize you could scrutinize he could scrutinize we could scrutinize you could scrutinize they could scrutinize	I could be scrutinizing you could be scrutinizing he could be scrutinizing we could be scrutinizing you could be scrutinizing they could be scrutinizing
Perfect	V-ing perfect
I could have scrutinized you could have scrutinized he could have scrutinized we could have scrutinized you could have scrutinized they could have scrutinized	I could have been scrutinizing you could have been scrutinizing he could have been scrutinizing we could have been scrutinizing you could have been scrutinizing they could have been scrutinizing

Negation

Simple form	V-ing form
I could not scrutinize you could not scrutinize he could not scrutinize we could not scrutinize you could not scrutinize they could not scrutinize	I could not be scrutinizing you could not be scrutinizing he could not be scrutinizing we could not be scrutinizing you could not be scrutinizing they could not be scrutinizing
Perfect	V-ing perfect
I could not have scrutinized you could not have scrutinized he could not have scrutinized we could not have scrutinized you could not have scrutinized they could not have scrutinized	I could not have been scrutinizing you could not have been scrutinizing he could not have been scrutinizing we could not have been scrutinizing you could not have been scrutinizing they could not have been scrutinizing

Interrogative form

Simple form	V-ing form
could I scrutinize? could you scrutinize? could he scrutinize? could we scrutinize? could you scrutinize? could they scrutinize?	could I be scrutinizing? could you be scrutinizing? could he be scrutinizing? could we be scrutinizing? could you be scrutinizing? could they be scrutinizing?
Perfect	V-ing perfect
could I have scrutinized? could you have scrutinized? could he have scrutinized? could we have scrutinized? could you have scrutinized? could they have scrutinized?	could I have been scrutinizing? could you have been scrutinizing? could he have been scrutinizing? could we have been scrutinizing? could you have been scrutinizing? could they have been scrutinizing?

Interro-negative form

Simple form	V-ing form
could I not scrutinize? could you not scrutinize? could he not scrutinize? could we not scrutinize? could you not scrutinize? could they not scrutinize?	could I not be scrutinizing? could you not be scrutinizing? could he not be scrutinizing? could we not be scrutinizing? could you not be scrutinizing? could they not be scrutinizing?
Perfect	V-ing perfect
could I not have scrutinized? could you not have scrutinized? could he not have scrutinized? could we not have scrutinized? could you not have scrutinized? could they not have scrutinized?	could I not have been scrutinizing? could you not have been scrutinizing? could he not have been scrutinizing? could we not have been scrutinizing? could you not have been scrutinizing? could they not have been scrutinizing?