English verb conjugation
COULD EXCISE

Regular verb: excise - excised - excised

Affirmation

Simple form	V-ing form
I could excise you could excise she could excise we could excise you could excise they could excise	I could be excising you could be excising she could be excising we could be excising you could be excising they could be excising
Perfect	V-ing perfect
I could have excised you could have excised she could have excised we could have excised you could have excised they could have excised	I could have been excising you could have been excising she could have been excising we could have been excising you could have been excising they could have been excising

Negation

Simple form	V-ing form
I could not excise you could not excise she could not excise we could not excise you could not excise they could not excise	I could not be excising you could not be excising she could not be excising we could not be excising you could not be excising they could not be excising
Perfect	V-ing perfect
I could not have excised you could not have excised she could not have excised we could not have excised you could not have excised they could not have excised	I could not have been excising you could not have been excising she could not have been excising we could not have been excising you could not have been excising they could not have been excising

Interrogative form

Simple form	V-ing form
could I excise? could you excise? could she excise? could we excise? could you excise? could they excise?	could I be excising? could you be excising? could she be excising? could we be excising? could you be excising? could they be excising?
Perfect	V-ing perfect
could I have excised? could you have excised? could she have excised? could we have excised? could you have excised? could they have excised?	could I have been excising? could you have been excising? could she have been excising? could we have been excising? could you have been excising? could they have been excising?

Interro-negative form

Simple form	V-ing form
could I not excise? could you not excise? could she not excise? could we not excise? could you not excise? could they not excise?	could I not be excising? could you not be excising? could she not be excising? could we not be excising? could you not be excising? could they not be excising?
Perfect	V-ing perfect
could I not have excised? could you not have excised? could she not have excised? could we not have excised? could you not have excised? could they not have excised?	could I not have been excising? could you not have been excising? could she not have been excising? could we not have been excising? could you not have been excising? could they not have been excising?