English verb conjugation
COULD CATEGORISE

Regular verb: categorise - categorised - categorised

Affirmation

Simple form	V-ing form
I could categorise you could categorise he could categorise we could categorise you could categorise they could categorise	I could be categorising you could be categorising he could be categorising we could be categorising you could be categorising they could be categorising
Perfect	V-ing perfect
I could have categorised you could have categorised he could have categorised we could have categorised you could have categorised they could have categorised	I could have been categorising you could have been categorising he could have been categorising we could have been categorising you could have been categorising they could have been categorising

Negation

Simple form	V-ing form
I could not categorise you could not categorise he could not categorise we could not categorise you could not categorise they could not categorise	I could not be categorising you could not be categorising he could not be categorising we could not be categorising you could not be categorising they could not be categorising
Perfect	V-ing perfect
I could not have categorised you could not have categorised he could not have categorised we could not have categorised you could not have categorised they could not have categorised	I could not have been categorising you could not have been categorising he could not have been categorising we could not have been categorising you could not have been categorising they could not have been categorising

Interrogative form

Simple form	V-ing form
could I categorise? could you categorise? could he categorise? could we categorise? could you categorise? could they categorise?	could I be categorising? could you be categorising? could he be categorising? could we be categorising? could you be categorising? could they be categorising?
Perfect	V-ing perfect
could I have categorised? could you have categorised? could he have categorised? could we have categorised? could you have categorised? could they have categorised?	could I have been categorising? could you have been categorising? could he have been categorising? could we have been categorising? could you have been categorising? could they have been categorising?

Interro-negative form

Simple form	V-ing form
could I not categorise? could you not categorise? could he not categorise? could we not categorise? could you not categorise? could they not categorise?	could I not be categorising? could you not be categorising? could he not be categorising? could we not be categorising? could you not be categorising? could they not be categorising?
Perfect	V-ing perfect
could I not have categorised? could you not have categorised? could he not have categorised? could we not have categorised? could you not have categorised? could they not have categorised?	could I not have been categorising? could you not have been categorising? could he not have been categorising? could we not have been categorising? could you not have been categorising? could they not have been categorising?