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

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

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

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

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