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