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

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

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

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

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