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

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

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

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

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