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