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

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

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

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

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