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