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