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