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