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