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 couldn't euthanise you couldn't euthanise she couldn't euthanise we couldn't euthanise you couldn't euthanise they couldn't euthanise
V-ing form
I couldn't be euthanising you couldn't be euthanising she couldn't be euthanising we couldn't be euthanising you couldn't be euthanising they couldn't be euthanising
Perfect
I couldn't have euthanised you couldn't have euthanised she couldn't have euthanised we couldn't have euthanised you couldn't have euthanised they couldn't have euthanised
V-ing perfect
I couldn't have been euthanising you couldn't have been euthanising she couldn't have been euthanising we couldn't have been euthanising you couldn't have been euthanising they couldn't 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
couldn't I euthanise? couldn't you euthanise? couldn't she euthanise? couldn't we euthanise? couldn't you euthanise? couldn't they euthanise?
V-ing form
couldn't I be euthanising? couldn't you be euthanising? couldn't she be euthanising? couldn't we be euthanising? couldn't you be euthanising? couldn't they be euthanising?
Perfect
couldn't I have euthanised? couldn't you have euthanised? couldn't she have euthanised? couldn't we have euthanised? couldn't you have euthanised? couldn't they have euthanised?
V-ing perfect
couldn't I have been euthanising? couldn't you have been euthanising? couldn't she have been euthanising? couldn't we have been euthanising? couldn't you have been euthanising? couldn't they have been euthanising?