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/b/ is an online forum on 4chan.

In the International Phonetic Alphabet, /b/ (and variation) refers to these consonantal stop phonemes:

• /b/, the voiced bilabial plosive, a widespread sound
  • /b̺/, the voiced linguolabial plosive, a rare sound
  • /b̪/, the voiced labiodental plosive, in the Austronesian and Germanic languages
• /ɓ/, the voiced bilabial implosive, a widespread sound
  • /ɓ̥/, the voiceless bilabial implosive, an unstable sound in languages of Africa

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