English verb conjugation
CAN CATEGORISE

Regular verb: categorise - categorised - categorised

Affirmation

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

Negation

Simple form	V-ing form
I can't categorise you can't categorise he can't categorise we can't categorise you can't categorise they can't categorise	I can't be categorising you can't be categorising he can't be categorising we can't be categorising you can't be categorising they can't be categorising
Perfect	V-ing perfect
I can't have categorised you can't have categorised he can't have categorised we can't have categorised you can't have categorised they can't have categorised	I can't have been categorising you can't have been categorising he can't have been categorising we can't have been categorising you can't have been categorising they can't have been categorising

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I categorise? can't you categorise? can't he categorise? can't we categorise? can't you categorise? can't they categorise?	can't I be categorising? can't you be categorising? can't he be categorising? can't we be categorising? can't you be categorising? can't they be categorising?
Perfect	V-ing perfect
can't I have categorised? can't you have categorised? can't he have categorised? can't we have categorised? can't you have categorised? can't they have categorised?	can't I have been categorising? can't you have been categorising? can't he have been categorising? can't we have been categorising? can't you have been categorising? can't they have been categorising?