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

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

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

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

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