1, 2, burr, 4, 5, burr, 7, 8, burr, 10, 11, burr, burr, 14, burr, 16, 17, burr, 19, 20, burr, 22, burr, burr, 25, 26, burr, 28, 29, burr, burr, burr, burr, burr, burr, burr, burr, burr, burr, 40, 41, burr, burr, 44, burr, 46, 47, burr, 49, 50, burr, 52, burr, burr, 55, 56, burr, 58, 59, burr, 61, 62, burr, 64, 65, burr, 67, 68, burr, 70, 71, burr, burr, 74, burr, 76, 77, burr, 79, 80, burr, 82, burr, burr, 85, 86, burr, 88, 89, burr, 91, 92, burr, 94, 95, burr, 97, 98, burr