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

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

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

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

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