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