Aspirated consonant
Unaspirated or tenuis consonants are occasionally marked with the modifier letter for unaspiration <*=> , a superscript equal sign: <t=> . Usually, however, unaspirated consonants are left unmarked: <t> .
How are unaspirated consonants left unmarked?
<t> 
Usually, however, unaspirated consonants are left unmarked: <t> .
unaspirated consonants