(0 19 1)(2 20 14 12 9 7 5)(3 6 4)(8 13 10)(11 17 15)(16 21 18)
ALLOWS (11/8)-SEQUENCE
1: (0 8 13)
(0 10 8 19 1)(2 20 14 12 9 7 5)(3 6 4)(11 17 15)(13)(16 21 18)
2: (7 20 9)
(0 10 8 19 1)(2 20 5)(3 6 4)(7)(9 14 12)(11 17 15)(13)(16 21 18)
3: (8 19 10)
(0 10 1)(2 20 5)(3 6 4)(7)(8)(9 14 12)(11 17 15)(13)(16 21 18)(19)
4: (9 14 12)
(0 10 1)(2 20 5)(3 6 4)(7)(8)(9)(11 17 15)(12)(13)(14)(16 21 18)(19)