How to convert regex to a regular grammar?

Below is one such examples which tries to step by step find RLG and LLG for regex 0 ∗ ( 1 ( 0 + 1)) ∗. At each step, same color is used to match part of regex getting translated into corresponding part in grammar. Notice that rule in first table says e ∗ gets translated to RLG productions taking form S → e S | ϵ.
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