“…Reversing this and lifting to Z 32 can give the symmetrically sectionable directed terrace (0, 1,31,18,30,9,24,6,13,3,12,20,23,27,21,26,10,5,11,7,4,28,19,29,22,8,25,14,2,15,17,16) and hence a cyclic solution to OP (4,4,5,5,15) from the 2-factor [6,13,3,12,20], [23,27,21,26], [10,5,11,7], [4,28,19,29,22], [8, 25, 14, 2, 15, 17, 16, ∞, 0, 1, 31, 18, 30, 9, 24].…”