I can materialise you can materialise he can materialise we can materialise you can materialise they can materialise
V-ing form
I can be materialising you can be materialising he can be materialising we can be materialising you can be materialising they can be materialising
Perfect
I can have materialised you can have materialised he can have materialised we can have materialised you can have materialised they can have materialised
V-ing perfect
I can have been materialising you can have been materialising he can have been materialising we can have been materialising you can have been materialising they can have been materialising
Negation
Simple form
I cannot materialise you cannot materialise he cannot materialise we cannot materialise you cannot materialise they cannot materialise
V-ing form
I cannot be materialising you cannot be materialising he cannot be materialising we cannot be materialising you cannot be materialising they cannot be materialising
Perfect
I cannot have materialised you cannot have materialised he cannot have materialised we cannot have materialised you cannot have materialised they cannot have materialised
V-ing perfect
I cannot have been materialising you cannot have been materialising he cannot have been materialising we cannot have been materialising you cannot have been materialising they cannot have been materialising
Interrogative form
Simple form
can I materialise? can you materialise? can he materialise? can we materialise? can you materialise? can they materialise?
V-ing form
can I be materialising? can you be materialising? can he be materialising? can we be materialising? can you be materialising? can they be materialising?
Perfect
can I have materialised? can you have materialised? can he have materialised? can we have materialised? can you have materialised? can they have materialised?
V-ing perfect
can I have been materialising? can you have been materialising? can he have been materialising? can we have been materialising? can you have been materialising? can they have been materialising?
Interro-negative form
Simple form
can I not materialise? can you not materialise? can he not materialise? can we not materialise? can you not materialise? can they not materialise?
V-ing form
can I not be materialising? can you not be materialising? can he not be materialising? can we not be materialising? can you not be materialising? can they not be materialising?
Perfect
can I not have materialised? can you not have materialised? can he not have materialised? can we not have materialised? can you not have materialised? can they not have materialised?
V-ing perfect
can I not have been materialising? can you not have been materialising? can he not have been materialising? can we not have been materialising? can you not have been materialising? can they not have been materialising?