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