I can dematerialise you can dematerialise he can dematerialise we can dematerialise you can dematerialise they can dematerialise
V-ing form
I can be dematerialising you can be dematerialising he can be dematerialising we can be dematerialising you can be dematerialising they can be dematerialising
Perfect
I can have dematerialised you can have dematerialised he can have dematerialised we can have dematerialised you can have dematerialised they can have dematerialised
V-ing perfect
I can have been dematerialising you can have been dematerialising he can have been dematerialising we can have been dematerialising you can have been dematerialising they can have been dematerialising
Negation
Simple form
I cannot dematerialise you cannot dematerialise he cannot dematerialise we cannot dematerialise you cannot dematerialise they cannot dematerialise
V-ing form
I cannot be dematerialising you cannot be dematerialising he cannot be dematerialising we cannot be dematerialising you cannot be dematerialising they cannot be dematerialising
Perfect
I cannot have dematerialised you cannot have dematerialised he cannot have dematerialised we cannot have dematerialised you cannot have dematerialised they cannot have dematerialised
V-ing perfect
I cannot have been dematerialising you cannot have been dematerialising he cannot have been dematerialising we cannot have been dematerialising you cannot have been dematerialising they cannot have been dematerialising
Interrogative form
Simple form
can I dematerialise? can you dematerialise? can he dematerialise? can we dematerialise? can you dematerialise? can they dematerialise?
V-ing form
can I be dematerialising? can you be dematerialising? can he be dematerialising? can we be dematerialising? can you be dematerialising? can they be dematerialising?
Perfect
can I have dematerialised? can you have dematerialised? can he have dematerialised? can we have dematerialised? can you have dematerialised? can they have dematerialised?
V-ing perfect
can I have been dematerialising? can you have been dematerialising? can he have been dematerialising? can we have been dematerialising? can you have been dematerialising? can they have been dematerialising?
Interro-negative form
Simple form
can I not dematerialise? can you not dematerialise? can he not dematerialise? can we not dematerialise? can you not dematerialise? can they not dematerialise?
V-ing form
can I not be dematerialising? can you not be dematerialising? can he not be dematerialising? can we not be dematerialising? can you not be dematerialising? can they not be dematerialising?
Perfect
can I not have dematerialised? can you not have dematerialised? can he not have dematerialised? can we not have dematerialised? can you not have dematerialised? can they not have dematerialised?
V-ing perfect
can I not have been dematerialising? can you not have been dematerialising? can he not have been dematerialising? can we not have been dematerialising? can you not have been dematerialising? can they not have been dematerialising?