an class="kwd">assert</span><span class="pun">(</span><span class="pln">bytes</span><span class="pun">[</span><span class="lit">0</span><span class="pun">..</span><span class="pln">n</span><span class="pun">] == [
        </span><span class="lit">0b11111110</span><span class="pun">, </span><span class="lit">0b11111111</span><span class="pun">, </span><span class="lit">0b11111111</span><span class="pun">, </span><span class="lit">0b11111111</span><span class="pun">, </span><span class="lit">0b11111111</span>