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