title: Turing machine that goes left on first symbol
body: <p>I have a turing machine with transitions given by the following table</p>
  
  <p><img src="https://i.stack.imgur.com/NRQNf.png" alt="enter image description here"></p>
  
  <p>I'm inputting the string aaaa. So if I look at the first symbol "a" in state A, it says to replace it with an X, go into state B, and move Left. This is where I'm confused. How can I move left if I'm looking at the first input symbol? Do I just go to a blank symbol?</p>
  
  <p>Thanks!</p>