English verb conjugation
COULD EXTERIORISE

Regular verb: exteriorise - exteriorised - exteriorised

Affirmation

Simple form	V-ing form
I could exteriorise you could exteriorise he could exteriorise we could exteriorise you could exteriorise they could exteriorise	I could be exteriorising you could be exteriorising he could be exteriorising we could be exteriorising you could be exteriorising they could be exteriorising
Perfect	V-ing perfect
I could have exteriorised you could have exteriorised he could have exteriorised we could have exteriorised you could have exteriorised they could have exteriorised	I could have been exteriorising you could have been exteriorising he could have been exteriorising we could have been exteriorising you could have been exteriorising they could have been exteriorising

Negation

Simple form	V-ing form
I could not exteriorise you could not exteriorise he could not exteriorise we could not exteriorise you could not exteriorise they could not exteriorise	I could not be exteriorising you could not be exteriorising he could not be exteriorising we could not be exteriorising you could not be exteriorising they could not be exteriorising
Perfect	V-ing perfect
I could not have exteriorised you could not have exteriorised he could not have exteriorised we could not have exteriorised you could not have exteriorised they could not have exteriorised	I could not have been exteriorising you could not have been exteriorising he could not have been exteriorising we could not have been exteriorising you could not have been exteriorising they could not have been exteriorising

Interrogative form

Simple form	V-ing form
could I exteriorise? could you exteriorise? could he exteriorise? could we exteriorise? could you exteriorise? could they exteriorise?	could I be exteriorising? could you be exteriorising? could he be exteriorising? could we be exteriorising? could you be exteriorising? could they be exteriorising?
Perfect	V-ing perfect
could I have exteriorised? could you have exteriorised? could he have exteriorised? could we have exteriorised? could you have exteriorised? could they have exteriorised?	could I have been exteriorising? could you have been exteriorising? could he have been exteriorising? could we have been exteriorising? could you have been exteriorising? could they have been exteriorising?

Interro-negative form

Simple form	V-ing form
could I not exteriorise? could you not exteriorise? could he not exteriorise? could we not exteriorise? could you not exteriorise? could they not exteriorise?	could I not be exteriorising? could you not be exteriorising? could he not be exteriorising? could we not be exteriorising? could you not be exteriorising? could they not be exteriorising?
Perfect	V-ing perfect
could I not have exteriorised? could you not have exteriorised? could he not have exteriorised? could we not have exteriorised? could you not have exteriorised? could they not have exteriorised?	could I not have been exteriorising? could you not have been exteriorising? could he not have been exteriorising? could we not have been exteriorising? could you not have been exteriorising? could they not have been exteriorising?