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