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