class='op'>(</span><span class='va'>letters</span><span class='op'>[</span><span class='fl'>1</span><span class='op'>:</span><span class='fl'>3</span><span class='op'>]</span>, <span class='va'>letters</span><span class='op'>[</span><span class='fl'>5</span><span class='op'>:</span><span class='fl'>6</span><span class='op'>]</span><span class='op'>)</span>,
                 ACTARM <span class='op'>=</span> <span class='va'>letters</span><span class='op'>[</span><span class='fl'>1</span><span class='op'>:</s