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