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4
KALKWARF KENT D filed this Form 4 on 08/08/2002
Entire Document
 
<PAGE>
FORM 4 (continued)

Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned
         (e.g., puts, calls, warrants, options, convertible securities)

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<TABLE>
<CAPTION>
                                                                                                                    10.     
                                                                                                          9.        Owner-  
                                                                                                          Number    ship    
                                                                                                          of        Form
                 2.                                                                                       Deriv-    of     
                 Conver-                    5.                               7.                           ative     Deriv-   11.    
                 sion                       Number of                        Title and Amount             Secur-    ative    Nature 
                 or                         Derivative     6.                of Underlying     8.         ities     Secur-   of     
                 Exer-             4.       Securities     Date              Securities        Price      Bene-     ity:     In-    
                 cise     3.       Trans-   Acquired (A)   Exercisable and   (Instr. 3 and 4)  of         ficially  Direct   direct 
                 Price    Trans-   action   or Disposed    Expiration Date   ----------------  Deriv-     Owned     (D) or   Bene-  
1.               of       action   Code     of(D)          (Month/Day/Year)            Amount  ative      at End    In-      ficial 
Title of         Deriv-   Date     (Instr.  (Instr. 3,     ----------------            or      Secur-     of        direct   Owner- 
Derivative       ative    (Month/  8)       4 and 5)       Date     Expira-            Number  ity        Month     (I)      ship   
Security         Secur-   Day/     ------   -------------  Exer-    tion               of      (Instr.    (Instr.   (Instr.  (Instr.
(Instr. 3)       ity      Year)    Code V    (A)      (D)  cisable  Date     Title     Shares  5)         4)        4)       4)
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<S>              <C>      <C>      <C>  <C>  <C>      <C>  <C>      <C>      <C>       <C>     <C>        <C>       <C>      <C>
5.75% Charter                                                                                            
Convertible Sr.  $21.56   8/7/02    P        $200,000      Immed.   10/15/05 Class A   9,276   $88,237.50 $200,000   D
Notes                                                                        Common    
                                                                             Stock
                                             (1)                                               (2)
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</TABLE>


(1)   Aggregate face value.
(2)   Aggregate purchase price.

 
**    Intentional misstatements or omissions of facts constitute Federal 
      Criminal Violations.
      See 18 U.S.C. 1001 and 15. U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If 
      space is insufficient, see Instruction 6 for procedure.


        /s/ Kent D. Kalkwarf                        August 8, 2002          
   -----------------------------           ----------------------------
            Kent D. Kalkwarf                                            
                                                                            
   ** Signature of Reporting Person                                           

Potential persons who are to respond to the collection of information contained
in this form are not required to respond unless the form displays a currently
valid OMB Number.


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                                                                 SEC 1474 (7-96)