English verb conjugation
COULD DIABOLISE

Regular verb: diabolise - diabolised - diabolised

Affirmation

Simple form	V-ing form
I could diabolise you could diabolise she could diabolise we could diabolise you could diabolise they could diabolise	I could be diabolising you could be diabolising she could be diabolising we could be diabolising you could be diabolising they could be diabolising
Perfect	V-ing perfect
I could have diabolised you could have diabolised she could have diabolised we could have diabolised you could have diabolised they could have diabolised	I could have been diabolising you could have been diabolising she could have been diabolising we could have been diabolising you could have been diabolising they could have been diabolising

Negation

Simple form	V-ing form
I could not diabolise you could not diabolise she could not diabolise we could not diabolise you could not diabolise they could not diabolise	I could not be diabolising you could not be diabolising she could not be diabolising we could not be diabolising you could not be diabolising they could not be diabolising
Perfect	V-ing perfect
I could not have diabolised you could not have diabolised she could not have diabolised we could not have diabolised you could not have diabolised they could not have diabolised	I could not have been diabolising you could not have been diabolising she could not have been diabolising we could not have been diabolising you could not have been diabolising they could not have been diabolising

Interrogative form

Simple form	V-ing form
could I diabolise? could you diabolise? could she diabolise? could we diabolise? could you diabolise? could they diabolise?	could I be diabolising? could you be diabolising? could she be diabolising? could we be diabolising? could you be diabolising? could they be diabolising?
Perfect	V-ing perfect
could I have diabolised? could you have diabolised? could she have diabolised? could we have diabolised? could you have diabolised? could they have diabolised?	could I have been diabolising? could you have been diabolising? could she have been diabolising? could we have been diabolising? could you have been diabolising? could they have been diabolising?

Interro-negative form

Simple form	V-ing form
could I not diabolise? could you not diabolise? could she not diabolise? could we not diabolise? could you not diabolise? could they not diabolise?	could I not be diabolising? could you not be diabolising? could she not be diabolising? could we not be diabolising? could you not be diabolising? could they not be diabolising?
Perfect	V-ing perfect
could I not have diabolised? could you not have diabolised? could she not have diabolised? could we not have diabolised? could you not have diabolised? could they not have diabolised?	could I not have been diabolising? could you not have been diabolising? could she not have been diabolising? could we not have been diabolising? could you not have been diabolising? could they not have been diabolising?