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

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

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

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

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