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

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

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

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

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