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