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

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

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

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

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