pattern matching - Regex conditional match -

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  one ?? ¢ ~! @Pages to work as a placeholder of 1-3? ¢ Asterisks are allowed in 2-5 positions? Â ¢ should be a status alphabet (except for ~! @) A ?? ¢ Should not accept any letter numbers ¢? ¢ In addition to the exceptions described above, no specific characters are allowed   
 This means that if my first word is ia alphabet then 2-5 may be alpha or * (2- 5 is not compulsory but if we enter it should be alpha or *)  
 But if we are using then 2-3 should be the situation! @  
 Now I  
  ^ [a-zA-Z ~] [a-zA-Z *] {0,4} [a-zA-Z] * $ ", Pattern. CASE_INSENSITIVE)    
 
 For the string that starts with  ~! @ :  
  ^ ( ? I? (?: [Az] [az *] {0,4} [az] * | ~! @ [Az *] {0} [az] *) $   < / Div>

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