I could euthanise you could euthanise she could euthanise we could euthanise you could euthanise they could euthanise
V-ing form
I could be euthanising you could be euthanising she could be euthanising we could be euthanising you could be euthanising they could be euthanising
Perfect
I could have euthanised you could have euthanised she could have euthanised we could have euthanised you could have euthanised they could have euthanised
V-ing perfect
I could have been euthanising you could have been euthanising she could have been euthanising we could have been euthanising you could have been euthanising they could have been euthanising
Negation
Simple form
I could not euthanise you could not euthanise she could not euthanise we could not euthanise you could not euthanise they could not euthanise
V-ing form
I could not be euthanising you could not be euthanising she could not be euthanising we could not be euthanising you could not be euthanising they could not be euthanising
Perfect
I could not have euthanised you could not have euthanised she could not have euthanised we could not have euthanised you could not have euthanised they could not have euthanised
V-ing perfect
I could not have been euthanising you could not have been euthanising she could not have been euthanising we could not have been euthanising you could not have been euthanising they could not have been euthanising
Interrogative form
Simple form
could I euthanise? could you euthanise? could she euthanise? could we euthanise? could you euthanise? could they euthanise?
V-ing form
could I be euthanising? could you be euthanising? could she be euthanising? could we be euthanising? could you be euthanising? could they be euthanising?
Perfect
could I have euthanised? could you have euthanised? could she have euthanised? could we have euthanised? could you have euthanised? could they have euthanised?
V-ing perfect
could I have been euthanising? could you have been euthanising? could she have been euthanising? could we have been euthanising? could you have been euthanising? could they have been euthanising?
Interro-negative form
Simple form
could I not euthanise? could you not euthanise? could she not euthanise? could we not euthanise? could you not euthanise? could they not euthanise?
V-ing form
could I not be euthanising? could you not be euthanising? could she not be euthanising? could we not be euthanising? could you not be euthanising? could they not be euthanising?
Perfect
could I not have euthanised? could you not have euthanised? could she not have euthanised? could we not have euthanised? could you not have euthanised? could they not have euthanised?
V-ing perfect
could I not have been euthanising? could you not have been euthanising? could she not have been euthanising? could we not have been euthanising? could you not have been euthanising? could they not have been euthanising?