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

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

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

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

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