English verb conjugation
COULD ETERNISE

Regular verb: eternise - eternised - eternised

Affirmation

Simple form	V-ing form
I could eternise you could eternise he could eternise we could eternise you could eternise they could eternise	I could be eternising you could be eternising he could be eternising we could be eternising you could be eternising they could be eternising
Perfect	V-ing perfect
I could have eternised you could have eternised he could have eternised we could have eternised you could have eternised they could have eternised	I could have been eternising you could have been eternising he could have been eternising we could have been eternising you could have been eternising they could have been eternising

Negation

Simple form	V-ing form
I couldn't eternise you couldn't eternise he couldn't eternise we couldn't eternise you couldn't eternise they couldn't eternise	I couldn't be eternising you couldn't be eternising he couldn't be eternising we couldn't be eternising you couldn't be eternising they couldn't be eternising
Perfect	V-ing perfect
I couldn't have eternised you couldn't have eternised he couldn't have eternised we couldn't have eternised you couldn't have eternised they couldn't have eternised	I couldn't have been eternising you couldn't have been eternising he couldn't have been eternising we couldn't have been eternising you couldn't have been eternising they couldn't have been eternising

Interrogative form

Simple form	V-ing form
could I eternise? could you eternise? could he eternise? could we eternise? could you eternise? could they eternise?	could I be eternising? could you be eternising? could he be eternising? could we be eternising? could you be eternising? could they be eternising?
Perfect	V-ing perfect
could I have eternised? could you have eternised? could he have eternised? could we have eternised? could you have eternised? could they have eternised?	could I have been eternising? could you have been eternising? could he have been eternising? could we have been eternising? could you have been eternising? could they have been eternising?

Interro-negative form

Simple form	V-ing form
couldn't I eternise? couldn't you eternise? couldn't he eternise? couldn't we eternise? couldn't you eternise? couldn't they eternise?	couldn't I be eternising? couldn't you be eternising? couldn't he be eternising? couldn't we be eternising? couldn't you be eternising? couldn't they be eternising?
Perfect	V-ing perfect
couldn't I have eternised? couldn't you have eternised? couldn't he have eternised? couldn't we have eternised? couldn't you have eternised? couldn't they have eternised?	couldn't I have been eternising? couldn't you have been eternising? couldn't he have been eternising? couldn't we have been eternising? couldn't you have been eternising? couldn't they have been eternising?