1.A1 2.D4 3.A1B2C4 4.B3 5.B2C3C2 6.D4D3C1 7.A1 8.B3B2B1 9.C2D1A2 10.D3D4B3 11.C4B5A3 12.D4C4B4 13.B5A5A4 14.C4B5A7 15.C3D3D2 16.B1C2D4 17.D3E4E5 18.B2C3D3 19.D1E2E3 20.D3C4E6 21.D2E1C6 22.A7B6A6 23.C6D6D5 24.E6D7E7 25.D6C7F7 26.E7D6C6 27.D5E6E7 28.B4C5E9 29.C7D8E8 30.D6C7D9 31.F7F8F9 32.C6B7F11 33.D8C9F10 34.E9D10D11 35.C9D8H11 36.D10E11G11 37.D8C9H12 38.D9E9H9 39.H11H10G10 40.H9I9H11 41.H12I11I10 42.I9J10I13 43.C9C10I12 44.E9D10H13 45.F8E9K13 46.J10J11J13 47.I11J10K12 48.H11I11K11 49.K13L12L11 50.I13J12K10 51.K12L13L10 52.H13G12K9 53.J10I9L9 54.K11J10K8 55.I9I8L8 56.K10J9K7 57.I8I7L7 58.K9J8K6 59.I7J6L6 60.K8J7K5 61.J6J5L5 62.K7J6K4 63.J5J4L4 64.K6J5L2 65.J4K3L3 66.K5J4K2 67.I12H13J3 68.J5I4J2 69.I10H11H12