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