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