I could recategorise you could recategorise he could recategorise we could recategorise you could recategorise they could recategorise
V-ing form
I could be recategorising you could be recategorising he could be recategorising we could be recategorising you could be recategorising they could be recategorising
Perfect
I could have recategorised you could have recategorised he could have recategorised we could have recategorised you could have recategorised they could have recategorised
V-ing perfect
I could have been recategorising you could have been recategorising he could have been recategorising we could have been recategorising you could have been recategorising they could have been recategorising
Negation
Simple form
I couldn't recategorise you couldn't recategorise he couldn't recategorise we couldn't recategorise you couldn't recategorise they couldn't recategorise
V-ing form
I couldn't be recategorising you couldn't be recategorising he couldn't be recategorising we couldn't be recategorising you couldn't be recategorising they couldn't be recategorising
Perfect
I couldn't have recategorised you couldn't have recategorised he couldn't have recategorised we couldn't have recategorised you couldn't have recategorised they couldn't have recategorised
V-ing perfect
I couldn't have been recategorising you couldn't have been recategorising he couldn't have been recategorising we couldn't have been recategorising you couldn't have been recategorising they couldn't have been recategorising
Interrogative form
Simple form
could I recategorise? could you recategorise? could he recategorise? could we recategorise? could you recategorise? could they recategorise?
V-ing form
could I be recategorising? could you be recategorising? could he be recategorising? could we be recategorising? could you be recategorising? could they be recategorising?
Perfect
could I have recategorised? could you have recategorised? could he have recategorised? could we have recategorised? could you have recategorised? could they have recategorised?
V-ing perfect
could I have been recategorising? could you have been recategorising? could he have been recategorising? could we have been recategorising? could you have been recategorising? could they have been recategorising?
Interro-negative form
Simple form
couldn't I recategorise? couldn't you recategorise? couldn't he recategorise? couldn't we recategorise? couldn't you recategorise? couldn't they recategorise?
V-ing form
couldn't I be recategorising? couldn't you be recategorising? couldn't he be recategorising? couldn't we be recategorising? couldn't you be recategorising? couldn't they be recategorising?
Perfect
couldn't I have recategorised? couldn't you have recategorised? couldn't he have recategorised? couldn't we have recategorised? couldn't you have recategorised? couldn't they have recategorised?
V-ing perfect
couldn't I have been recategorising? couldn't you have been recategorising? couldn't he have been recategorising? couldn't we have been recategorising? couldn't you have been recategorising? couldn't they have been recategorising?