The following abbreviations, when used
in the inscription on the face of this certificate, shall be construed as though
they were written out in full according to applicable laws or
regulations:

    


    
      
        
          
            	
                    TEN
      COM

                  	
                    –
      as tenants in common

                  	
                    UNIF
      GIFT MIN ACT

                  	
                    –                    Custodian                    

                  
	
                    TEN
      ENT

                  	
                    –
      as tenants by the entireties

                  	 
      	
                    (Cust)

                  	
                    (Minor)

                  
	
                    JT
      TEN

                  	
                    –
      as joint tenants with right

                  	 
      	
                    under
      Uniform Gifts to Minors

                  
	 
      	
                    of
      survivorship and not as

                  	 
      	
                    Act
      ____________________

                  
	 
      	
                    tenants
      in common

                  	 
      	
                    (State)

                  


          

        

      

    

    
 

    Additional
abbreviations may also be used though not in the above list.

    


    For value
received, ___________________________________________________ hereby sell,
assign and transfer unto

    


    
      
        
          
            
              
                
                  
                    
                      
                        
                          
                            
                              
                                
                                  
                                    
                                      	
                                              PLEASE
      INSERT SOCIAL SECURITY OR OTHER

                                            	 
      
	
                                              IDENTIFYING
      NUMBER OF ASSIGNEE

                                            	
                                                      

                                            
	 	 
	 	 
	 
      
	
                                                 

                                            
	
                                              PLEASE
      PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING POSTAL ZIP CODE OF
      ASSIGNEE

                                            
	 
      
	
                                                 

                                            
	 
      
	
                                                 

                                            
	 
      
	
                                              ________________________________________________________________________________________
      Shares of the common stock represented by the within Certificate, and do
      hereby irrevocably constitute
      and appoint _________________ 

                                            
	 
	
                                                

                                            


                                    

                                  

                                

                              

                            

                          

                        

                      

                    

                  

                

              

            

          

        

      

    

    Attorney
to transfer the said stock on the books of the within-named Corporation with
full power of substitution in the premises.

    


    Dated,
_________________________

    


    
      
        	 
      	
                  

              	
                   

              
	 
      	
                NOTICE:

              	
                THE
      SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON
      THE FACE OF THE CERTIFICATE, IN EVERY PARTICULAR, WITHOUT ALTERATION OR
      ENLARGEMENT, OR ANY CHANGE
WHATEVER.

              


      

    

    


    
      
        	
                SIGNATURE(S)
      GUARANTEED:

              	 
      
	 
      	 
      
	
                  

              	 
      
	
                THE
      SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
      (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH
      MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT
      TO S.E.C. RULE 17Ad-15.

              	 
      


      

    

    


    KEEP
THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, MUTILATED OR DESTROYED,
THE COMPANY WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF A
REPLACEMENT CERTIFICATE.