Form 1: 1A1 | 1A2 | 1A3 | 1B1 | 1B2 Form 2: 2A1 | 2A2 | 2A3 | 2B1 | 2B2
Form 6: 6S | 6B | 6SS Form 7: 7S | 7B | 7SS
Form 3: 3W | 3Y | 3K | 3S | 3J Form 4: 4W | 4Y | 4K | 4S | 4J Form 5: 5W | 5Y | 5K | 5S | 5J