(0 4 2)(1 18 8 6 3)(5 21 19 15 13)(7 11 9)(10 14 12)(16 20 17)
ALLOWS (11/8)-SEQUENCE
1: (0 4 7)
(0 11 9 7 2)(1 18 8 6 3)(4)(5 21 19 15 13)(10 14 12)(16 20 17)
2: (3 8 6)
(0 11 9 7 2)(1 18 8)(3)(4)(5 21 19 15 13)(6)(10 14 12)(16 20 17)
3: (2 9 7)
(0 11 9)(1 18 8)(2)(3)(4)(5 21 19 15 13)(6)(7)(10 14 12)(16 20 17)
4: (1 18 8)
(0 11 9)(1)(2)(3)(4)(5 21 19 15 13)(6)(7)(8)(10 14 12)(16 20 17)(18)