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