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