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

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

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

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

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