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

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

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

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

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