I must have in my room a lamp.
I must have in my room a computer to play games.
I must have a bed to sleep.
I mustn't want to have messy room.
I mustn't want someoane to enter in my room without knocking at the door.
I mustn't want someoane to bring food in my room.
Deci must e ceva ce tu permiti si mustn't e ceva ce tu nu le permiti celorlalti sa faca