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

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

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

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

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