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

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

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

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

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