:</h4> <ul class="flat"><li class="flat__item"><a href="../../exercise/3/5.html#ex3.66">3.66</a>, </li><li class="flat__item"><a href="../../exercise/3/5.html#ex3.67">3.67</a>, </li><li class="flat__item"><a href="../../exercise/3/5.html#ex3.68">3.68</a>, </li><li class="flat__item"><a href="../../exercise/3/5.html#ex3.69">3.69</a>, </li><li class="flat__item"><a href="../../exercise/3/5.html#ex3.70">3.70</a>, </li><li class="flat__item"><a href="../../exercise/3/5.html#ex3.71">3.71</a>, </li><li class="fla