I have an alphabet $A = \{b,B\}$ and I'm asked to write down the pattern of the regular expression $(\epsilon|bb|b)(B|bb)(b|\epsilon|b)$. What does the question actually want me to do? I'm not sure. Does it want me to give the possible patterns that can be formed with $b$ and $B$? But then surely the question would not have been phrased the way it is.
I'm just confused about what I need to do here and what is expected of the answer. If anyone could give an example it would be very helpful.
Note: This is not the original question, I changed and simplified it.
['B', 'Bb', 'bB', 'bBb', 'bb', 'bbB', 'bbBb', 'bbb', 'bbbb', 'bbbbb']
? $\endgroup$