2.1.4 Maxima

A grade: { 1, 2, 3, 4, 6, 7, 13, 32, 33, 34, 36, 37, 50, 51, 55, 56 }

B grade: { 9, 10, 11, 14, 15, 16, 17, 20, 22, 24, 29, 30, 31, 38, 39, 40 }

C grade: { 54, 57 }

F grade: { 5, 8, 12, 18, 19, 21, 23, 25, 26, 27, 28, 35, 41, 42, 43, 44, 45, 46, 47, 48, 49, 52, 53, 58, 59, 60, 61, 62 }