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