can/can't/must/mustn't

• I can forget my seatbelt
• I must forget my seatbelt
• I mustn't wear my seatbelt
• I mustn't forget my seatbelt

• She can park 
• She must park
• She mustn't park
• She mustn't parking

• You can be quiet 
• You must be quiet
• Don't be quiet
• You mustn't be quiet

• You can turn right
• you must turn right
• you can turn left
• you must turn left

• You can stop
• You can't stop 
• You must stop
• You mustn't stop

• You must listen to the teacher
• You mustn't listen to the teacher
• You can't listen to the teacher
• You can listen to the teacher

• You mustn't turn left
• You can turn right
• You can't turn left
• You must turn left

• You can eat in class
• You must eat in class
• You can't eat in class
• You mustn't eating in class

• I can forget to wear my seatbelt
• I mustn't forget to wear my seatbelt
• I can't wear my seatbelt
• I must forget to wear my seatbelt

• You mustn't turn left
• You must turn left
• You can turn left
• You mustn't turn right