A grade: { 1, 7, 8, 16, 21, 22, 23, 32, 47, 48, 49, 62, 103, 104, 105 }
B grade: { 3, 4, 5, 6, 9, 10, 11, 17, 24, 31, 50, 51, 65, 68 }
C grade: { 2, 15, 28, 33, 34, 35, 36, 37, 38, 39, 40, 52, 55, 56, 57, 58, 59, 63, 64, 66, 67, 73, 74, 75, 76, 77, 78, 79, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 97, 99, 100, 101, 102, 106, 107, 110, 116 }
F grade: { 12, 13, 14, 18, 19, 20, 25, 26, 27, 29, 30, 41, 42, 43, 44, 45, 46, 53, 54, 60, 61, 69, 70, 71, 72, 80, 94, 95, 96, 98, 108, 109, 111, 112, 113, 114, 115 }