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

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

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

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

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