digraph crossword2x2 {

  r1c0dE [label="E"];
  r1c0dN [label="X"];
  r1c0dS [label="S"];
  r1c0dW [label="W"];
  r1c1dN [label="X"];
  r1c1dE [label="E"];
  r1c1dS [label="S"];
  r1c1dW [label="W"];

  r1c0dE -> r1c1dE [label="F"];
  r1c0dE -> r1c0dS [label="R"];
  r1c0dE -> r1c0dN [label="L"];
  r1c0dN -> r1c0dN [label="F"];
  r1c0dN -> r1c0dE [label="R"];
  r1c0dN -> r1c0dW [label="L"];
  r1c0dS -> r1c0dS [label="F"];
  r1c0dS -> r1c0dW [label="R"];
  r1c0dS -> r1c0dE [label="L"];
  r1c0dW -> r1c0dW [label="F"];
  r1c0dW -> r1c0dN [label="R"];
  r1c0dW -> r1c0dS [label="L"];
  r1c1dN -> r1c1dN [label="F"];
  r1c1dN -> r1c1dE [label="R"];
  r1c1dN -> r1c1dW [label="L"];
  r1c1dE -> r1c2dE [label="F"];
  r1c1dE -> r1c1dS [label="R"];
  r1c1dE -> r1c1dN [label="L"];
  r1c1dS -> r1c1dS [label="F"];
  r1c1dS -> r1c1dW [label="R"];
  r1c1dS -> r1c1dE [label="L"];
  r1c1dW -> r1c0dW [label="F"];
  r1c1dW -> r1c1dN [label="R"];
  r1c1dW -> r1c1dS [label="L"];

}
