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

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

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

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

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