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

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

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

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

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