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