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