1.  After initial vowels
     for the second letter:    b  d  l-m  n  p  r  s-t  u-z
                use number:    2  3   4   5  6  7   8    9

2.  After initial letter S
     for the second letter:    a  ch  e  h-i  m-p  t  u  w-z
                use number:    2   3  4   5    6   7  8   9

3.  After initial letters Qu
     for the second letter:    a  e  i  o  r  t  y
                use number:    3  4  5  6  7  8  9
     for names beginning 
                Qa-Qt  use:    2-29

4.  After other initial consonants
     for the second letter:    a  e  i  o  r  u  y
                use number:    3  4  5  6  7  8  9

5.  When an additional number is preferred
      for the third letter:    a-d  e-h  i-l  m  n-q  r-t  u-w  x-z
                use number:     2    3    4   5   6    7    8    9

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