English verb conjugation
COULD PREFERTILISE

Regular verb: prefertilise - prefertilised - prefertilised

Affirmation

Simple form	V-ing form
I could prefertilise you could prefertilise she could prefertilise we could prefertilise you could prefertilise they could prefertilise	I could be prefertilising you could be prefertilising she could be prefertilising we could be prefertilising you could be prefertilising they could be prefertilising
Perfect	V-ing perfect
I could have prefertilised you could have prefertilised she could have prefertilised we could have prefertilised you could have prefertilised they could have prefertilised	I could have been prefertilising you could have been prefertilising she could have been prefertilising we could have been prefertilising you could have been prefertilising they could have been prefertilising

Negation

Simple form	V-ing form
I could not prefertilise you could not prefertilise she could not prefertilise we could not prefertilise you could not prefertilise they could not prefertilise	I could not be prefertilising you could not be prefertilising she could not be prefertilising we could not be prefertilising you could not be prefertilising they could not be prefertilising
Perfect	V-ing perfect
I could not have prefertilised you could not have prefertilised she could not have prefertilised we could not have prefertilised you could not have prefertilised they could not have prefertilised	I could not have been prefertilising you could not have been prefertilising she could not have been prefertilising we could not have been prefertilising you could not have been prefertilising they could not have been prefertilising

Interrogative form

Simple form	V-ing form
could I prefertilise? could you prefertilise? could she prefertilise? could we prefertilise? could you prefertilise? could they prefertilise?	could I be prefertilising? could you be prefertilising? could she be prefertilising? could we be prefertilising? could you be prefertilising? could they be prefertilising?
Perfect	V-ing perfect
could I have prefertilised? could you have prefertilised? could she have prefertilised? could we have prefertilised? could you have prefertilised? could they have prefertilised?	could I have been prefertilising? could you have been prefertilising? could she have been prefertilising? could we have been prefertilising? could you have been prefertilising? could they have been prefertilising?

Interro-negative form

Simple form	V-ing form
could I not prefertilise? could you not prefertilise? could she not prefertilise? could we not prefertilise? could you not prefertilise? could they not prefertilise?	could I not be prefertilising? could you not be prefertilising? could she not be prefertilising? could we not be prefertilising? could you not be prefertilising? could they not be prefertilising?
Perfect	V-ing perfect
could I not have prefertilised? could you not have prefertilised? could she not have prefertilised? could we not have prefertilised? could you not have prefertilised? could they not have prefertilised?	could I not have been prefertilising? could you not have been prefertilising? could she not have been prefertilising? could we not have been prefertilising? could you not have been prefertilising? could they not have been prefertilising?