lass="r-pr">#&gt;</span>  [2,] "&gt;"  "&gt;"  "v"  ""   "&gt;"  "&gt;"  "v"  ""   ""  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  [3,] ""   ""   "v"  ""   "^"  ""   "v"  ""   ""  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  [4,] ""   ""   "&gt;"  "&gt;"  "^"  ""   "&gt;"  "&gt;"  "v" </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  [5,] ""   ""   ""   ""   ""   ""   ""   ""   "v" </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  [6,] ""   