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