Computers and Technology, 06.05.2020 06:30, amandaclark255

Give a regular expression for the language L1 of strings over alphabet Σ = {a, b, c} that have a pair of identical symbols separated by a substring whose length is a multiple of 3. For example, abcba, bb, cbabcb ∈ L1 but ε, a, bcbcab /∈ L1. Note that cbabcb is in the language two different ways. Briefly justify your answer.

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Give a regular expression for the language L1 of strings over alphabet Σ = {a, b, c} that have a pai...