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

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

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

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

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