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