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

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

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

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

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