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

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

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

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

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