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