(0 17 3)(1 7 4)(2 19 6)(5 10 8)(9 14 11)(12 15 13)(16 20 18)
ALLOWS (11/8)-SEQUENCE
1: (6 9 19)
(0 17 3)(1 7 4)(2 19 14 11 9)(5 10 8)(6)(12 15 13)(16 20 18)
2: (5 10 8)
(0 17 3)(1 7 4)(2 19 14 11 9)(5)(6)(8)(10)(12 15 13)(16 20 18)
3: (2 11 9)
(0 17 3)(1 7 4)(2)(5)(6)(8)(9)(10)(11 19 14)(12 15 13)(16 20 18)
4: (1 7 4)
(0 17 3)(1)(2)(4)(5)(6)(7)(8)(9)(10)(11 19 14)(12 15 13)(16 20 18)