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