I could westernise you could westernise he could westernise we could westernise you could westernise they could westernise
V-ing form
I could be westernising you could be westernising he could be westernising we could be westernising you could be westernising they could be westernising
Perfect
I could have westernised you could have westernised he could have westernised we could have westernised you could have westernised they could have westernised
V-ing perfect
I could have been westernising you could have been westernising he could have been westernising we could have been westernising you could have been westernising they could have been westernising
Negation
Simple form
I could not westernise you could not westernise he could not westernise we could not westernise you could not westernise they could not westernise
V-ing form
I could not be westernising you could not be westernising he could not be westernising we could not be westernising you could not be westernising they could not be westernising
Perfect
I could not have westernised you could not have westernised he could not have westernised we could not have westernised you could not have westernised they could not have westernised
V-ing perfect
I could not have been westernising you could not have been westernising he could not have been westernising we could not have been westernising you could not have been westernising they could not have been westernising
Interrogative form
Simple form
could I westernise? could you westernise? could he westernise? could we westernise? could you westernise? could they westernise?
V-ing form
could I be westernising? could you be westernising? could he be westernising? could we be westernising? could you be westernising? could they be westernising?
Perfect
could I have westernised? could you have westernised? could he have westernised? could we have westernised? could you have westernised? could they have westernised?
V-ing perfect
could I have been westernising? could you have been westernising? could he have been westernising? could we have been westernising? could you have been westernising? could they have been westernising?
Interro-negative form
Simple form
could I not westernise? could you not westernise? could he not westernise? could we not westernise? could you not westernise? could they not westernise?
V-ing form
could I not be westernising? could you not be westernising? could he not be westernising? could we not be westernising? could you not be westernising? could they not be westernising?
Perfect
could I not have westernised? could you not have westernised? could he not have westernised? could we not have westernised? could you not have westernised? could they not have westernised?
V-ing perfect
could I not have been westernising? could you not have been westernising? could he not have been westernising? could we not have been westernising? could you not have been westernising? could they not have been westernising?