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