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

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

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

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

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