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