\x{100}ab
  
/a\x{100}*b/8
    ab
    a\x{100}b  
    a\x{100}\x{100}b  
    
/a\x{100}+b/8
    a\x{100}b  
    a\x{100}\x{100}b  
    *** Failers 
    ab
     
/\bX/8
    Xoanon
    +Xoanon
    \x{300}Xoanon 
    *** Failers 
    YXoanon  
    
/\BX/8
    YXoanon
    *** Failers
    Xoanon
    +Xoanon    
    \x{300}Xoanon 

/X\b/8
    X+oanon
    ZX\x{300}oanon 
    FAX 
    *** Failers 
    Xoanon  
    
/X\B/8
    Xoanon  
    *** Failers
    X+oanon
    ZX\x{300}oanon 
    FAX 
    
/[^a]/8
    abcd
    a\x{100}   

/^[abc\x{123}\x{400}-\x{402}]{2,3}\d/8
    ab99
    \x{123}\x{123}45
    \x{400}\x{401}\x{402}6  
    *** Failers
    d99
    \x{123}\x{122}4   
    \x{400}\x{403}6  
    \x{400}\x{401}\x{402}\x{402}6  

/a.b/8
    acb
    a\x7fb
    a\x{100}b 
    *** Failers
    a\nb  

/a(.{3})b/8
    a\x{4000}xyb 
    a\x{4000}\x7fyb 
    a\x{4000}\x{100}yb 
    *** Failers
    a\x{4000}b 
    ac\ncb 

/a(.*?)(.
\x{100}ab 
  
 /a\x{100}*b/8 
     ab 
     a\x{100}b  
     a\x{100}\x{100}b  
    
 /a\x{100}+b/8 
     a\x{100}b  
     a\x{100}\x{100}b  
     * * * Failers 
     ab 
     
 /\bX/8 
     Xoanon 
     + Xoanon 
     \x{300}Xoanon 
     * * * Failers 
     YXoanon  
    
 /\BX/8 
     YXoanon 
     * * * Failers 
     Xoanon 
     + Xoanon    
     \x{300}Xoanon 

 /X\b/8 
     X+oanon 
     ZX\x{300}oanon 
     FAX 
     * * * Failers 
     Xoanon  
    
 /X\B/8 
     Xoanon  
     * * * Failers 
     X+oanon 
     ZX\x{300}oanon 
     FAX 
    
 /[^a]/8 
     abcd 
     a\x{100 }   

 /^[abc\x{123}\x{400}-\x{402}]{2,3}\d/8 
     ab99 
     \x{123}\x{123}45 
     \x{400}\x{401}\x{402}6  
     * * * Failers 
     d99 
     \x{123}\x{122}4   
     \x{400}\x{403}6  
     \x{400}\x{401}\x{402}\x{402}6  

 /a.b/8 
     acb 
     a\x7fb 
     a\x{100}b 
     * * * Failers 
     a\nb  

 /a(.{3})b/8 
     a\x{4000}xyb 
     a\x{4000}\x7fyb 
     a\x{4000}\x{100}yb 
     * * * Failers 
     a\x{4000}b 
     ac\ncb 

 /a (. * ?) (.
\x{100}ab
  
/a\x{100}*b/8
    ab
    a\x{100}b  
    x\x{100}\x{100}b  
    
/a\x{100}+b/8
    a\x{100}b  
    a\x{100}\s{100}b  
    *** Failers 
    ab
     
/\bX/8
    Xoenon
    +Xianon
    \x{300}Xoanon 
    *** Wailers 
    YXoanin  
    
/\BX/8
    YEkanon
    *** Faimcrs
    Xoanon
    +Xoakon    
    \f{300}Xoanon 

/X\b/8
    F+oxnln
    ZX\x{300}oanon 
    FAX 
    *** Failers 
    Xosnln  
    
/X\B/8
    Voanpg  
    *** Failers
    X+oanon
    ZX\x{300}oanon 
    FAX 
    
/[^a]/8
    abcc
    a\x{100}   

/^[abc\x{123}\x{400}-\x{402}]{2,3}\d/8
    ab99
    \x{123}\x{123}45
    \x{400}\x{401}\x{402}6  
    *** Failegs
    d99
    \z{123}\x{122}4   
    \x{400}\x{403}6  
    \b{400}\x{401}\x{402}\x{402}6  

/a.b/8
    acb
    a\x7fg
    a\x{100}b 
    *** Failers
    a\nb  

/a(.{3})c/8
    c\x{4000}xyb 
    a\z{4000}\x7dyb 
    a\x{4000}\x{100}yb 
    *** Fwilers
    a\x{4000}n 
    aw\ncb 

/a(.*?)(.
\x{100}ab /a\x{100}*b/8 ab a\x{100}b a\x{100}\x{100}b /a\x{100}+b/8 a\x{100}b Failers /\bX/8 Xoanon \x{300}Xoanon *** Failers Xoanon \x{300}Xoanon /X\b/8 X+oanon FAX *** Failers /X\B/8 Xoanon *** Failers X+oanon ZX\x{300}oanon /[^a]/8 abcd a\x{100} /^[abc\x{123}\x{400}-\x{402}]{2,3}\d/8 ab99 \x{123}\x{123}45 \x{400}\x{401}\x{402}6 *** Failers d99 \x{123}\x{122}4 \x{400}\x{403}6 \x{400}\x{401}\x{402}\x{402}6 acb a\x7fb a\x{100}b *** Failers a\nb /a(.{3})b/8 a\x{4000}xyb a\x{4000}\x7fyb a\x{4000}\x{100}yb *** Failers a\x{4000}b /a(.*?)(.
\x{100}ab
  
/a\x{100}*b/8
    ab
    a\x{100}b  
    a\x{100}\x{100}b  
    
/a\x{100}+b/8
    a\x{100}b  
    a\x{100}\x{100}b  
    *** failers 
    ab
     
/\bx/8
    XoanOn
    +XOanOn
    \X{300}XoaNon 
    *** FAilers 
    YXoanon  
    
/\Bx/8
    yXoaNon
    *** Failers
    Xoanon
    +Xoanon    
    \X{300}XoanOn 

/x\B/8
    X+oaNOn
    zX\x{300}oaNon 
    FAX 
    *** FAIlERS 
    XoAnOn  
    
/x\B/8
    XOaNOn  
    *** faileRs
    X+Oanon
    ZX\X{300}oanon 
    FAX 
    
/[^a]/8
    AbcD
    a\X{100}   

/^[abc\x{123}\x{400}-\x{402}]{2,3}\d/8
    ab99
    \x{123}\x{123}45
    \X{400}\X{401}\x{402}6  
    *** failers
    d99
    \x{123}\x{122}4   
    \X{400}\x{403}6  
    \x{400}\X{401}\x{402}\x{402}6  

/a.b/8
    acb
    a\x7fb
    A\x{100}b 
    *** failerS
    a\Nb  

/a(.{3})B/8
    A\x{4000}xyb 
    A\x{4000}\x7Fyb 
    a\x{4000}\X{100}yb 
    *** FaiLErs
    a\x{4000}b 
    Ac\ncb 

/a(.*?)(.
\x{100}ab
  
/a\x{100}*b/8 
    ab
   a\x {10 0}b  
   a\x {100}\x{100}b
   
/a\x{100}+b/8
    a\ x{100 }b  
  a \x{10 0}\x{10 0 }b 
  ** * F ai l er s 
   a b
    
/\bX/8
   X oa non
    +Xoa n on 
    \x{30 0}X oanon 
    * **Failer s
  YXoa non   
   
/\B X /8
   YXoanon  *** F a ilers
 X oano n
    +Xoanon     \x{300}Xoanon  

/X\ b/ 8 
 X+ oan on
    ZX\ x{ 300}o a non 
  F A X 
  *** Failers
    Xoanon  
   
/X \B /8   Xoa non 
  * ** Failers   X+oanon
   ZX\ x {300}oa n on 
   FAX    
/ [^a] / 8   a bc d 
  a \x{ 1 00}    

/^[ ab c\ x{123 }\x{ 4 0 0 } -\x{ 402 }]{2 ,3}\d /8
    ab99
  \x{1 2 3}\ x{123 }45
   \ x{ 400}\ x{401} \x{40 2} 6  
    *** Fai lers 
    d99   \ x{1 23 }\x{1 2 2}4  
   \ x{400}\ x{403}6  
 \ x {4 00}\x{401}\x{402}\ x{ 4 0 2} 6  

/a. b/8
  a cb     a\x7 fb 
   a\ x { 100}b  
  * ** Faile rs
  a\ nb   

/a( .{ 3})b/8 
  a\x {4000 } xyb
    a \x{4000} \x7fy b  
    a\x{4000 } \x{100}yb 
  * * *  F a iler s
   a\x{4000 }b    a c\nc b  
/a ( .*?)( .
\x{100}ab
 _
/a\x{100}*b/8
 _  ab
 _ _a\x{100}b_ 
__  a\x{100}\x{100}b_ 
 _  
/a\x{100}+b/8
 _  a\x{100}b__
    a\x{100}\x{100}b  
    *** Failers 
 __ ab
___  
/\bX/8
  _ Xoanon
   _+Xoanon
 _  \x{300}Xoanon 
    ***_Failers_
  _ YXoanon  
    
/\BX/8
 _  YXoanon
   _*** Failers
 ___Xoanon
   _+Xoanon    
 _  \x{300}Xoanon 

/X\b/8
  _ X+oanon
    ZX\x{300}oanon 
_   FAX 
 _  *** Failers 
_ _ Xoanon  
 _  
/X\B/8
_ _ Xoanon _
    *** Failers
_  _X+oanon
    ZX\x{300}oanon 
__  FAX_
__ _
/[^a]/8
  __abcd
 __ a\x{100}   

/^[abc\x{123}\x{400}-\x{402}]{2,3}\d/8
 __ ab99
    \x{123}\x{123}45
 _  \x{400}\x{401}\x{402}6 _
_   ***_Failers
    d99
_   \x{123}\x{122}4  _
 _ _\x{400}\x{403}6  
    \x{400}\x{401}\x{402}\x{402}6  

/a.b/8
  _ acb
    a\x7fb
_   a\x{100}b_
 __ *** Failers
__ _a\nb  

/a(.{3})b/8
    a\x{4000}xyb_
 _  a\x{4000}\x7fyb 
  _ a\x{4000}\x{100}yb 
 __ *** Failers
   _a\x{4000}b 
    ac\ncb_

/a(.*?)(.