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  1. or download this
    perl -le'$^=~s#.#$_=$'\'';print s/.|$//g#ge'
    
  2. or download this
    perl -le'$^=~s/.$/!print@+/e while$^'
    
  3. or download this
    perl -le'$_=$^;s||s/.$/!print length/e|ge'