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

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

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

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

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