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