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