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

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

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

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

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