I could fantasise you could fantasise he could fantasise we could fantasise you could fantasise they could fantasise
V-ing form
I could be fantasising you could be fantasising he could be fantasising we could be fantasising you could be fantasising they could be fantasising
Perfect
I could have fantasised you could have fantasised he could have fantasised we could have fantasised you could have fantasised they could have fantasised
V-ing perfect
I could have been fantasising you could have been fantasising he could have been fantasising we could have been fantasising you could have been fantasising they could have been fantasising
Negation
Simple form
I could not fantasise you could not fantasise he could not fantasise we could not fantasise you could not fantasise they could not fantasise
V-ing form
I could not be fantasising you could not be fantasising he could not be fantasising we could not be fantasising you could not be fantasising they could not be fantasising
Perfect
I could not have fantasised you could not have fantasised he could not have fantasised we could not have fantasised you could not have fantasised they could not have fantasised
V-ing perfect
I could not have been fantasising you could not have been fantasising he could not have been fantasising we could not have been fantasising you could not have been fantasising they could not have been fantasising
Interrogative form
Simple form
could I fantasise? could you fantasise? could he fantasise? could we fantasise? could you fantasise? could they fantasise?
V-ing form
could I be fantasising? could you be fantasising? could he be fantasising? could we be fantasising? could you be fantasising? could they be fantasising?
Perfect
could I have fantasised? could you have fantasised? could he have fantasised? could we have fantasised? could you have fantasised? could they have fantasised?
V-ing perfect
could I have been fantasising? could you have been fantasising? could he have been fantasising? could we have been fantasising? could you have been fantasising? could they have been fantasising?
Interro-negative form
Simple form
could I not fantasise? could you not fantasise? could he not fantasise? could we not fantasise? could you not fantasise? could they not fantasise?
V-ing form
could I not be fantasising? could you not be fantasising? could he not be fantasising? could we not be fantasising? could you not be fantasising? could they not be fantasising?
Perfect
could I not have fantasised? could you not have fantasised? could he not have fantasised? could we not have fantasised? could you not have fantasised? could they not have fantasised?
V-ing perfect
could I not have been fantasising? could you not have been fantasising? could he not have been fantasising? could we not have been fantasising? could you not have been fantasising? could they not have been fantasising?