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