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