English verb conjugation
COULD EXTERNALISE

Regular verb: externalise - externalised - externalised

Affirmation

Simple form	V-ing form
I could externalise you could externalise she could externalise we could externalise you could externalise they could externalise	I could be externalising you could be externalising she could be externalising we could be externalising you could be externalising they could be externalising
Perfect	V-ing perfect
I could have externalised you could have externalised she could have externalised we could have externalised you could have externalised they could have externalised	I could have been externalising you could have been externalising she could have been externalising we could have been externalising you could have been externalising they could have been externalising

Negation

Simple form	V-ing form
I couldn't externalise you couldn't externalise she couldn't externalise we couldn't externalise you couldn't externalise they couldn't externalise	I couldn't be externalising you couldn't be externalising she couldn't be externalising we couldn't be externalising you couldn't be externalising they couldn't be externalising
Perfect	V-ing perfect
I couldn't have externalised you couldn't have externalised she couldn't have externalised we couldn't have externalised you couldn't have externalised they couldn't have externalised	I couldn't have been externalising you couldn't have been externalising she couldn't have been externalising we couldn't have been externalising you couldn't have been externalising they couldn't have been externalising

Interrogative form

Simple form	V-ing form
could I externalise? could you externalise? could she externalise? could we externalise? could you externalise? could they externalise?	could I be externalising? could you be externalising? could she be externalising? could we be externalising? could you be externalising? could they be externalising?
Perfect	V-ing perfect
could I have externalised? could you have externalised? could she have externalised? could we have externalised? could you have externalised? could they have externalised?	could I have been externalising? could you have been externalising? could she have been externalising? could we have been externalising? could you have been externalising? could they have been externalising?

Interro-negative form

Simple form	V-ing form
couldn't I externalise? couldn't you externalise? couldn't she externalise? couldn't we externalise? couldn't you externalise? couldn't they externalise?	couldn't I be externalising? couldn't you be externalising? couldn't she be externalising? couldn't we be externalising? couldn't you be externalising? couldn't they be externalising?
Perfect	V-ing perfect
couldn't I have externalised? couldn't you have externalised? couldn't she have externalised? couldn't we have externalised? couldn't you have externalised? couldn't they have externalised?	couldn't I have been externalising? couldn't you have been externalising? couldn't she have been externalising? couldn't we have been externalising? couldn't you have been externalising? couldn't they have been externalising?