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