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

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

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

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

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