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