GREP to apply a character style to a specific character within a specific word

[defaulttl9htox8heul]

Please can you help with the GREP expression to apply a character style to a specific character within a specific word.

For example: The name Abraham, I would like to apply a character style to the letter "b" within that name.

Thanks in advance

[pixxxelschubser · Accepted solution]

one possible way as grep style

(?<=\bA)b(?=raham\b)

[defaulttl9htox8heul]

Thanks so much pixxxelschuber, that worked exactly as needed!