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

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

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

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

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