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