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