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