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

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

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

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

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