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

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

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

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

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