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

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

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

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

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