... abcacbacabacbcabacabcacbcabacbcacba (# a = 13, #b= 10, #c= 12) ,w2= abcacbcabacbabcbacabcbabcabacbcacba (# a = 12, #b= 12, #c= 11) ,w3= abcacbacabacbcabacabcbabcabacbcacba (# a = 13, #b= ... A n,wehave A 0= {λ}, A 1= {a, b, c}, A 2= {ab, ac, ba, bc, ca, cb}, A 3= {aba, abc, aca, acb, bab, bac, bca, bcb, cab, cac, cba, cbc}, (1)and so on, with A ∗=n≥0 A nin analogy to the ... use the generating wordsw1= abcacbacabcbabcabacbcabcbacbcacba (# a = 11, #b= 11, #c= 11) ,w2= abcacbcabacabcacbabcbacabacbcacba (# a = 12, #b= 10, #c= 11) ,(18) of a Brinkhuis triple...