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