# Character set for Amazon Transcribe Medical
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To use custom vocabularies in Amazon Transcribe Medical, use the following character set.

## English character set
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For English custom vocabularies, you can use the following characters in the `Phrase` and `SoundsLike` columns:
+ a - z
+ A - Z
+ ' (apostrophe)
+ - (hyphen)
+ . (period)

You can use the following International Phonetic Alphabet (IPA) characters in the `IPA` column of the vocabulary input file.


| Character | Code | Character | Code | 
| --- | --- | --- | --- | 
| aʊ | 0061 028A | w | 0077 | 
| aɪ | 0061 026A | z | 007A | 
| b | 0062 | æ | 00E6 | 
| d | 0064 | ð | 00F0 | 
| eɪ | 0065 026A | ŋ | 014B | 
| f | 0066 | ɑ | 0251 | 
| g | 0067 | ɔ | 0254 | 
| h | 0068 | ɔɪ | 0254 026A | 
| i | 0069 | ə | 0259 | 
| j | 006A | ɛ | 025B | 
| k | 006B | ɝ | 025D | 
| l | 006C | ɡ | 0261 | 
| l̩ | 006C 0329 | ɪ | 026A | 
| m | 006D | ɹ | 0279 | 
| n | 006E | ʃ | 0283 | 
| n̩ | 006E 0329 | ʊ | 028A | 
| oʊ | 006F 028A | ʌ | 028C | 
| p | 0070 | ʍ | 028D | 
| s | 0073 | ʒ | 0292 | 
| t | 0074 | ʤ | 02A4 | 
| u | 0075 | ʧ | 02A7 | 
| v | 0076 | θ | 03B8 |