u ∈ Σ∗| u ends with aa}. L2 = {u ∈ Σ∗| u ends and begins with different letters }. L3 = {u ∈ Σ∗| u contains abba}. L4 = {u ∈ Σ∗| u is of the form anbamfor n,m > 0}. Given the above language

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A: Please refer to the following for the algortihm of the code =>Start with an input list lst.Check…

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A:

Q: how to solve this without list methods/ string metjods and without expression_check(ex)

A: Coded using Python 3.

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A:

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A: solution:-

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A:

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A: The answer is given below:-