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

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

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

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

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