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