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double_metaphone.* is based on Maurice Aubrey's perl module, his license is
included below. Soundex and NYSIIS were written by Jamie Turner and 
Ryan O'Neil at YouGov Plc, based on some other public work.
Use as you see fit.


Copyright (c) 2011, YouGov Plc.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of YouGov Plc.  nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL YOUGOV PLC BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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DESCRIPTION

  This module implements a "sounds like" algorithm developed
  by Lawrence Philips which he published in the June, 2000 issue
  of C/C++ Users Journal.  Double Metaphone is an improved
  version of Philips' original Metaphone algorithm.  

COPYRIGHT

  Copyright 2000, Maurice Aubrey <maurice@hevanet.com>. 
  All rights reserved.

  This code is based heavily on the C++ implementation by
  Lawrence Philips and incorporates several bug fixes courtesy
  of Kevin Atkinson <kevina@users.sourceforge.net>.

  This module is free software; you may redistribute it and/or
  modify it under the same terms as Perl itself. 

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