nt is that by going around the loop repeatedly, we transfer the contents of R2 symbol-by-symbol to R1.
Similarly, whenever m and n are different numbers, we can build a program <code class="docutils literal notranslate"><span class="pre">move_m_n</span></code>. This program would write the contents of Rm onto the end of Rn, emptying Rm in the process.</p>
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<div class="section" id="modifying-move-2-1">
<h2>Modifying <code class="docutils literal notranslate"><span class="pre">move_2_1</span></code><a c