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