48b 48 47b 47 46b 46 45b 45 44b 44 43b 43 42b 42 41b 41 40b 40 39b 39 38b 38 37b 37 36b 36 35b 35 34b 34 33b 33 32b 32 31b 31 30b 30 29b 29 20b 20 19b 19 18b 18 17b 17 16b 16 15b 15 14b 14 13b 13 12b 12 11b 11 10b 10 9b 9 8b 8 7b 7 6b 6 5b 5 4b 4 3b 3 2b 2 1b 1