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