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