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