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

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

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

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

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