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

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

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

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

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