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

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

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

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

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