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

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

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

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

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