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