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

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

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

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

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