Why does not Bech32 use the character “b” within the information half?

The info a part of a Bech32 tackle makes use of alphanumeric characters excluding “1”, “b”, “i”, and “o”.

I perceive that “1”, “i”, and “o” are excluded as they may very well be mistaken for different similar-looking characters, and one other character must be eliminated to get right down to a base 32 character set, however why “b”?

Out of all of the remaining characters that may very well be eliminated, it looks as if “l” (lowercase “L”) may need been the subsequent selection.

Is there a particular motive why “b” was excluded as a substitute?

The info a part of a Bech32 tackle makes use of alphanumeric characters excluding “1”, “b”, “i”, and “o”.

I perceive that “1”, “i”, and “o” are excluded as they may very well be mistaken for different similar-looking characters, and one other character must be eliminated to get right down to a base 32 character set, however why “b”?

Out of all of the remaining characters that may very well be eliminated, it looks as if “l” (lowercase “L”) may need been the subsequent selection.

Is there a particular motive why “b” was excluded as a substitute?