$$
      \le,
      \leq,
      \ge,
      \geq,
  	\equiv,
      \models,
      \prec,
      \succ,
      \sim,
      \perp,
      \preceq,
      \succeq,
      \simeq,
      \mid,
      \ll,
      \gg,
      \asymp,
      \parallel,
 	    \subset,
 		  \supset,
 	 	  \approx,
 	 	  \bowtie,
      \subseteq,
 	 	  \supseteq,
	 	  \cong,
      \sqsubset,
 	 	  \sqsupset,
      \neq,
 	 	  \smile,
 	 	  \sqsubseteq,
 	 	  \sqsupseteq,
      \frown,
      \in,
 	    \ni,
  	  \propto,
 	    \vdash,
 	 	  \dashv
$$
