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