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