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