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