title: How do I separate every character in a string in a vector into a column using tidyr
body: <p>I want to separate each string in the vector into columns but I can't do it!  </p>
  
  <pre><code>library(tidyr)  
      library(dplyr)
      df &lt;- data.frame(x = c("abe", "bas", "dds", "eer"))
      df %&gt;% separate(x, c("A", "B", "C"), sep=1)
  </code></pre>
  
  <p>The output I want looks like this</p>
  
  <pre><code>  A B C
  1 a b e
  2 b a s
  3 d d s
  4 e e r
  </code></pre>
  
  <p>That sep=1 works for 2 characters but doesn't work for 3. I was hoping a regex like sep="." or sep="[a-z]" would work too but it doesn't.</p>
  
  <p>This is probably super easy but I'm new to R. Won't someone please help!</p>