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