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

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

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

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

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