Question: For the following exercises, give a regular expression that represents that described set. 2. The set of strings over {a, b, c} in which all

For the following exercises, give a regular expression that represents that described set.

2. The set of strings over {a, b, c} in which all the as precede the bs, which in turn precede the cs. It is possible that there are no as, bs, or cs.

3. The same as Exercise 2 without the null string.

Answer #3 please

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