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

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

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

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

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