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