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

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

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

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

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