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

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

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

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

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