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