WURCS=2.0/4,20,19/[h1122h_2-5][a2121A-1x_1-5][a2122h-1x_1-5_2*NSO/3=O/3=O_6*OSO/3=O/3=O][a2121A-1x_1-5_2*OSO/3=O/3=O]/1-2-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4/a?-b1_b?-c1_c?-d1_d?-e1_e?-f1_f?-g1_g?-h1_h?-i1_i?-j1_j?-k1_k?-l1_l?-m1_m?-n1_n?-o1_o?-p1_p?-q1_q?-r1_r?-s1_s?-t1