I could immaterialise you could immaterialise he could immaterialise we could immaterialise you could immaterialise they could immaterialise
V-ing form
I could be immaterialising you could be immaterialising he could be immaterialising we could be immaterialising you could be immaterialising they could be immaterialising
Perfect
I could have immaterialised you could have immaterialised he could have immaterialised we could have immaterialised you could have immaterialised they could have immaterialised
V-ing perfect
I could have been immaterialising you could have been immaterialising he could have been immaterialising we could have been immaterialising you could have been immaterialising they could have been immaterialising
Negation
Simple form
I could not immaterialise you could not immaterialise he could not immaterialise we could not immaterialise you could not immaterialise they could not immaterialise
V-ing form
I could not be immaterialising you could not be immaterialising he could not be immaterialising we could not be immaterialising you could not be immaterialising they could not be immaterialising
Perfect
I could not have immaterialised you could not have immaterialised he could not have immaterialised we could not have immaterialised you could not have immaterialised they could not have immaterialised
V-ing perfect
I could not have been immaterialising you could not have been immaterialising he could not have been immaterialising we could not have been immaterialising you could not have been immaterialising they could not have been immaterialising
Interrogative form
Simple form
could I immaterialise? could you immaterialise? could he immaterialise? could we immaterialise? could you immaterialise? could they immaterialise?
V-ing form
could I be immaterialising? could you be immaterialising? could he be immaterialising? could we be immaterialising? could you be immaterialising? could they be immaterialising?
Perfect
could I have immaterialised? could you have immaterialised? could he have immaterialised? could we have immaterialised? could you have immaterialised? could they have immaterialised?
V-ing perfect
could I have been immaterialising? could you have been immaterialising? could he have been immaterialising? could we have been immaterialising? could you have been immaterialising? could they have been immaterialising?
Interro-negative form
Simple form
could I not immaterialise? could you not immaterialise? could he not immaterialise? could we not immaterialise? could you not immaterialise? could they not immaterialise?
V-ing form
could I not be immaterialising? could you not be immaterialising? could he not be immaterialising? could we not be immaterialising? could you not be immaterialising? could they not be immaterialising?
Perfect
could I not have immaterialised? could you not have immaterialised? could he not have immaterialised? could we not have immaterialised? could you not have immaterialised? could they not have immaterialised?
V-ing perfect
could I not have been immaterialising? could you not have been immaterialising? could he not have been immaterialising? could we not have been immaterialising? could you not have been immaterialising? could they not have been immaterialising?