I could collectivise you could collectivise he could collectivise we could collectivise you could collectivise they could collectivise
V-ing form
I could be collectivising you could be collectivising he could be collectivising we could be collectivising you could be collectivising they could be collectivising
Perfect
I could have collectivised you could have collectivised he could have collectivised we could have collectivised you could have collectivised they could have collectivised
V-ing perfect
I could have been collectivising you could have been collectivising he could have been collectivising we could have been collectivising you could have been collectivising they could have been collectivising
Negation
Simple form
I could not collectivise you could not collectivise he could not collectivise we could not collectivise you could not collectivise they could not collectivise
V-ing form
I could not be collectivising you could not be collectivising he could not be collectivising we could not be collectivising you could not be collectivising they could not be collectivising
Perfect
I could not have collectivised you could not have collectivised he could not have collectivised we could not have collectivised you could not have collectivised they could not have collectivised
V-ing perfect
I could not have been collectivising you could not have been collectivising he could not have been collectivising we could not have been collectivising you could not have been collectivising they could not have been collectivising
Interrogative form
Simple form
could I collectivise? could you collectivise? could he collectivise? could we collectivise? could you collectivise? could they collectivise?
V-ing form
could I be collectivising? could you be collectivising? could he be collectivising? could we be collectivising? could you be collectivising? could they be collectivising?
Perfect
could I have collectivised? could you have collectivised? could he have collectivised? could we have collectivised? could you have collectivised? could they have collectivised?
V-ing perfect
could I have been collectivising? could you have been collectivising? could he have been collectivising? could we have been collectivising? could you have been collectivising? could they have been collectivising?
Interro-negative form
Simple form
could I not collectivise? could you not collectivise? could he not collectivise? could we not collectivise? could you not collectivise? could they not collectivise?
V-ing form
could I not be collectivising? could you not be collectivising? could he not be collectivising? could we not be collectivising? could you not be collectivising? could they not be collectivising?
Perfect
could I not have collectivised? could you not have collectivised? could he not have collectivised? could we not have collectivised? could you not have collectivised? could they not have collectivised?
V-ing perfect
could I not have been collectivising? could you not have been collectivising? could he not have been collectivising? could we not have been collectivising? could you not have been collectivising? could they not have been collectivising?