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