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

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

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

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

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