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

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

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

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

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