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

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

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

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

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