      <pr0 <prm <step <prfull >                                             
      var=fire, I=-322, p=10.0,20.0,50.01,                                  
      [Mg]=5,[C]=6,[Cl]=6;                                                  
                                                                            
      p  p p p孨᪮ ⠢,             
   饣  ᫮  娬  p Mg5C6Cl6  ⠫쯨             
   p -322 /, p  o 10  50 .                   
                                                                            
                                                                            
                                                                            
                                                                            
                                                                            
