z 8 a 8 + z 8 a 10 + z 7 a 7 + 2 z 7 a 9 + z 7 a 11 + z 6 a 6 − 5 z 6 a 8 − 6 z 6 a 10 − 4 z 5 a 7 − 10 z 5 a 9 − 6 z 5 a 11 − 5 z 4 a 6 + 7 z 4 a 8 + 12 z 4 a 10 + 2 z 3 a 7 + 13 z 3 a 9 + 11 z 3 a 11 + 6 z 2 a 6 − 5 z 2 a 8 − 11 z 2 a 10 + z a 7 − 5 z a 9 − 6 z a 11 − 2 a 6 + 2 a 8 + 4 a 10 + 1 a 12 {\displaystyle {\frac {z^{8}}{a^{8}}}+{\frac {z^{8}}{a^{10}}}+{\frac {z^{7}}{a^{7}}}+{\frac {2z^{7}}{a^{9}}}+{\frac {z^{7}}{a^{11}}}+{\frac {z^{6}}{a^{6}}}-{\frac {5z^{6}}{a^{8}}}-{\frac {6z^{6}}{a^{10}}}-{\frac {4z^{5}}{a^{7}}}-{\frac {10z^{5}}{a^{9}}}-{\frac {6z^{5}}{a^{11}}}-{\frac {5z^{4}}{a^{6}}}+{\frac {7z^{4}}{a^{8}}}+{\frac {12z^{4}}{a^{10}}}+{\frac {2z^{3}}{a^{7}}}+{\frac {13z^{3}}{a^{9}}}+{\frac {11z^{3}}{a^{11}}}+{\frac {6z^{2}}{a^{6}}}-{\frac {5z^{2}}{a^{8}}}-{\frac {11z^{2}}{a^{10}}}+{\frac {z}{a^{7}}}-{\frac {5z}{a^{9}}}-{\frac {6z}{a^{11}}}-{\frac {2}{a^{6}}}+{\frac {2}{a^{8}}}+{\frac {4}{a^{10}}}+{\frac {1}{a^{12}}}}
