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