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

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

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

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

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