English verb conjugation
COULD AUTHORISE

Regular verb: authorise - authorised - authorised

Affirmation

Simple form	V-ing form
I could authorise you could authorise he could authorise we could authorise you could authorise they could authorise	I could be authorising you could be authorising he could be authorising we could be authorising you could be authorising they could be authorising
Perfect	V-ing perfect
I could have authorised you could have authorised he could have authorised we could have authorised you could have authorised they could have authorised	I could have been authorising you could have been authorising he could have been authorising we could have been authorising you could have been authorising they could have been authorising

Negation

Simple form	V-ing form
I couldn't authorise you couldn't authorise he couldn't authorise we couldn't authorise you couldn't authorise they couldn't authorise	I couldn't be authorising you couldn't be authorising he couldn't be authorising we couldn't be authorising you couldn't be authorising they couldn't be authorising
Perfect	V-ing perfect
I couldn't have authorised you couldn't have authorised he couldn't have authorised we couldn't have authorised you couldn't have authorised they couldn't have authorised	I couldn't have been authorising you couldn't have been authorising he couldn't have been authorising we couldn't have been authorising you couldn't have been authorising they couldn't have been authorising

Interrogative form

Simple form	V-ing form
could I authorise? could you authorise? could he authorise? could we authorise? could you authorise? could they authorise?	could I be authorising? could you be authorising? could he be authorising? could we be authorising? could you be authorising? could they be authorising?
Perfect	V-ing perfect
could I have authorised? could you have authorised? could he have authorised? could we have authorised? could you have authorised? could they have authorised?	could I have been authorising? could you have been authorising? could he have been authorising? could we have been authorising? could you have been authorising? could they have been authorising?

Interro-negative form

Simple form	V-ing form
couldn't I authorise? couldn't you authorise? couldn't he authorise? couldn't we authorise? couldn't you authorise? couldn't they authorise?	couldn't I be authorising? couldn't you be authorising? couldn't he be authorising? couldn't we be authorising? couldn't you be authorising? couldn't they be authorising?
Perfect	V-ing perfect
couldn't I have authorised? couldn't you have authorised? couldn't he have authorised? couldn't we have authorised? couldn't you have authorised? couldn't they have authorised?	couldn't I have been authorising? couldn't you have been authorising? couldn't he have been authorising? couldn't we have been authorising? couldn't you have been authorising? couldn't they have been authorising?