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

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

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

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

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