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