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

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

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

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

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