List the duties of the line judge and the service judge.

(i) Duties of the line judge: 1. To watch the line allotted to him or her and decide whether the shuttle lands in or out. 2. To signal 'out' by stretching both arms sideways, and 'in' by pointing the hand towards the line. 3. To signal that he or she is unsighted when unable to see the shuttle land. (ii) Duties of the service judge: 1. To check that the shuttle is hit below the server's waist at the time of service. 2. To check that the racket head is below the server's hand when the shuttle is hit. 3. To call a service fault to the umpire, such as a foot fault.