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