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