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

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

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

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

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