detect ucs2:
   U+000a = linefeed
   U+0a00 = not a character

hiragana range:
   Unicode: U+3041 .. U+3093
   UTF-8: e38181 .. e381bf, e38280 .. e38293
   EUC-JP: 0xa4a1 .. 0xa4f3
   Shift_JIS: 0x829f .. 0x82f1

punctuation:
   half
      ,  2c
      .  2e
      !  21
      ?  3f

   full
         sjis  eucjp utf8     ucs2le   ucs2be
      ,  8141  a1a2  e38081   0130     3001
      .  8142  a1a3  e38082   0230     3002
      !  8149  a1aa  efbc81   01ff     ff01
      ?  8148  a1a9  efbc9f   1fff     ff1f