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

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

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

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

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