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