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