I can devitalise you can devitalise he can devitalise we can devitalise you can devitalise they can devitalise
V-ing form
I can be devitalising you can be devitalising he can be devitalising we can be devitalising you can be devitalising they can be devitalising
Perfect
I can have devitalised you can have devitalised he can have devitalised we can have devitalised you can have devitalised they can have devitalised
V-ing perfect
I can have been devitalising you can have been devitalising he can have been devitalising we can have been devitalising you can have been devitalising they can have been devitalising
Negation
Simple form
I can't devitalise you can't devitalise he can't devitalise we can't devitalise you can't devitalise they can't devitalise
V-ing form
I can't be devitalising you can't be devitalising he can't be devitalising we can't be devitalising you can't be devitalising they can't be devitalising
Perfect
I can't have devitalised you can't have devitalised he can't have devitalised we can't have devitalised you can't have devitalised they can't have devitalised
V-ing perfect
I can't have been devitalising you can't have been devitalising he can't have been devitalising we can't have been devitalising you can't have been devitalising they can't have been devitalising
Interrogative form
Simple form
can I devitalise? can you devitalise? can he devitalise? can we devitalise? can you devitalise? can they devitalise?
V-ing form
can I be devitalising? can you be devitalising? can he be devitalising? can we be devitalising? can you be devitalising? can they be devitalising?
Perfect
can I have devitalised? can you have devitalised? can he have devitalised? can we have devitalised? can you have devitalised? can they have devitalised?
V-ing perfect
can I have been devitalising? can you have been devitalising? can he have been devitalising? can we have been devitalising? can you have been devitalising? can they have been devitalising?
Interro-negative form
Simple form
can't I devitalise? can't you devitalise? can't he devitalise? can't we devitalise? can't you devitalise? can't they devitalise?
V-ing form
can't I be devitalising? can't you be devitalising? can't he be devitalising? can't we be devitalising? can't you be devitalising? can't they be devitalising?
Perfect
can't I have devitalised? can't you have devitalised? can't he have devitalised? can't we have devitalised? can't you have devitalised? can't they have devitalised?
V-ing perfect
can't I have been devitalising? can't you have been devitalising? can't he have been devitalising? can't we have been devitalising? can't you have been devitalising? can't they have been devitalising?