I must realise you must realise he must realise we must realise you must realise they must realise
V-ing form
I must be realising you must be realising he must be realising we must be realising you must be realising they must be realising
Perfect
I must have realised you must have realised he must have realised we must have realised you must have realised they must have realised
V-ing perfect
I must have been realising you must have been realising he must have been realising we must have been realising you must have been realising they must have been realising
Negation
Simple form
I must not realise you must not realise he must not realise we must not realise you must not realise they must not realise
V-ing form
I must not be realising you must not be realising he must not be realising we must not be realising you must not be realising they must not be realising
Perfect
I must not have realised you must not have realised he must not have realised we must not have realised you must not have realised they must not have realised
V-ing perfect
I must not have been realising you must not have been realising he must not have been realising we must not have been realising you must not have been realising they must not have been realising
Interrogative form
Simple form
must I realise? must you realise? must he realise? must we realise? must you realise? must they realise?
V-ing form
must I be realising? must you be realising? must he be realising? must we be realising? must you be realising? must they be realising?
Perfect
must I have realised? must you have realised? must he have realised? must we have realised? must you have realised? must they have realised?
V-ing perfect
must I have been realising? must you have been realising? must he have been realising? must we have been realising? must you have been realising? must they have been realising?
Interro-negative form
Simple form
must I not realise? must you not realise? must he not realise? must we not realise? must you not realise? must they not realise?
V-ing form
must I not be realising? must you not be realising? must he not be realising? must we not be realising? must you not be realising? must they not be realising?
Perfect
must I not have realised? must you not have realised? must he not have realised? must we not have realised? must you not have realised? must they not have realised?
V-ing perfect
must I not have been realising? must you not have been realising? must he not have been realising? must we not have been realising? must you not have been realising? must they not have been realising?